How GPA Is Calculated for a Second Bachelor's Degree Student
When a student who already holds a bachelor's degree enrolls in a new bachelor's degree program at a different institution, the new institution establishes an independent institutional GPA — a cumulative GPA that counts only courses taken at that new school. Courses from the first bachelor's degree that are accepted as transfer credit satisfy requirements but do not enter the new GPA calculation. Only courses actually completed at the new institution contribute grade points to the new institutional GPA.
This means a second bachelor's degree student has, simultaneously:
- An institutional GPA at the new school, reflecting only new coursework
- An institutional GPA at the original school, permanently on the first transcript
- What might be called a "combined undergraduate GPA" that graduate programs and centralized application systems calculate by summing quality points from all institutions
The new institution's transcript will show transfer credits (with a "T" or "TR" notation in place of a grade) and then grades for all courses taken at the new school. The institutional GPA visible on this transcript reflects only the new courses, since transferred credits carry no grade points in the new system.
What the new institutional GPA does not tell you — and this is the critical nuance — is what any external reviewer will calculate when they see both transcripts together. For many practical purposes (graduate school applications, professional school admissions, some licensing decisions), the reviewer sees both transcripts and does their own calculation.
Standard Grade Point Scale (4.0)
Both the new institution's GPA and any combined calculation use the same standard letter-to-point conversion:
| Letter Grade | Grade Points |
|---|---|
| A+ (at schools that use A+) | 4.0 or 4.3 (varies) |
| A | 4.0 |
| A− | 3.7 |
| B+ | 3.3 |
| B | 3.0 |
| B− | 2.7 |
| C+ | 2.3 |
| C | 2.0 |
| C− | 1.7 |
| D+ | 1.3 |
| D | 1.0 |
| D− | 0.7 |
| F | 0.0 |
Transfer Credits: Accepted But Not Averaged
The standard treatment of transfer credits at institutions granting a second bachelor's degree is "credit accepted, grade not averaged." When a second bachelor's degree student submits transcripts from their first institution, the registrar evaluates which courses satisfy which requirements in the new program. Accepted courses appear on the student's record at the new school with the original credit hours but without grade points contributing to the new GPA.
The practical consequence: a second bachelor's degree student who completed 60 credits at the first institution and transfers 30 of them to the new program is effectively starting with 30 credit hours of requirements already satisfied, but a GPA history of zero quality points and zero grade-point credits at the new institution. Their new institutional GPA is built entirely from the 30 or more credits they complete at the new school.
This structure means the new institutional GPA can look very strong (if the student performs well in the new coursework) without reflecting any of the difficulty — or any of the low grades — from the original degree. For employers and recruiters who only request the most recent transcript, this institutional GPA is what they see. For graduate programs and professional schools that request all transcripts, both records are visible.
What "Transfer Credit Accepted" Actually Means
Transfer credit acceptance is an institutional determination, not a guarantee. Common outcomes:
| Scenario | Typical Outcome |
|---|---|
| First degree course matches new program requirement directly | Credit accepted, requirement fulfilled, no new course needed |
| Course is in the same discipline but not an exact match | Credit accepted as elective; new requirement course still needed |
| Course is from a very different field | Credit may not transfer at all, or transfers as free elective |
| Course was taken more than 5–10 years ago (technical fields) | Some institutions require retaking or supplemental testing |
| Grade was below C (or D) in the original course | Many institutions will not accept below-C transfer credits |
The last row is important: institutions that require a C or above in transfer courses will decline to accept D grades from the first degree. This means a student who earned Ds in some first-degree courses may have to retake those courses at the new institution — which now affects the new institutional GPA. A retaken course at the new school is treated as a new course, contributing grade points to the new GPA.
What Graduate Schools and Programs Actually See
Graduate program application processes almost universally require the applicant to submit official transcripts from all colleges and universities attended. "All" means all — including the first bachelor's institution, any community college, any study abroad institution that issued its own credits, and the second bachelor's institution. There is no standard way to present only selected transcripts to a graduate program.
What happens with those transcripts at the graduate school level varies by program:
Combined cumulative GPA: Many programs calculate a single combined undergraduate GPA by summing all quality points from all institutions and dividing by all credit hours. This treats a second bachelor's degree the same as additional semesters at the same institution — mathematically helpful if the new courses are strong, but not a clean slate.
Most recent institution GPA: Some programs, particularly in fields where recent preparation matters (engineering, computer science, health professions prerequisites), focus primarily on the most recent institution's GPA when evaluating an applicant's current preparation level. This approach is more favorable to second bachelor's students with strong new records.
Trend-based holistic review: Many programs — particularly at the master's level in humanities and social sciences — review the complete transcript history for trend. A student whose first bachelor's showed consistent Cs, then whose second bachelor's showed consistent As, may be evaluated quite favorably even if the combined GPA is unremarkable, because the trend tells a clear story about academic growth.
The variation in how graduate programs handle multiple transcripts is one reason why researching each target program's specific admissions approach matters. Contacting the admissions office and asking "how do you handle applicants with two undergraduate degrees?" often yields specific answers that inform strategy.
AMCAS, LSAC, and Professional School GPA Calculations
For students pursuing medical school (AMCAS) or law school (LSAC), the centralized application system calculates a GPA from all undergraduate coursework from all institutions attended as an undergraduate, regardless of degree status. These systems do not distinguish between first-degree and second-degree coursework — all of it is undergraduate coursework and all of it goes into the calculated GPA.
The AMCAS GPA calculation includes:
- All coursework from all institutions listed on the application as attended as an undergraduate
- Repeated courses (both the original and the retake, averaged together unless the institution uses grade replacement, which AMCAS does not recognize — AMCAS includes all attempts)
- Post-baccalaureate coursework taken at any institution, labeled separately as post-baccalaureate but included in the overall GPA calculation
- Second bachelor's coursework, treated as regular undergraduate coursework
For a student pursuing medical school who completed a first bachelor's with a 2.8 GPA (60 credits) and then completed 60 credits of a second bachelor's with a 3.8 GPA, the AMCAS calculation would be:
First degree: 60 credits × 2.8 = 168 quality points
Second degree: 60 credits × 3.8 = 228 quality points
AMCAS Combined: (168 + 228) ÷ 120 = 396 ÷ 120 = 3.30 cumulative GPA
The 3.30 reflects a genuine improvement over the first degree's 2.8, but it is not the 3.8 that the second degree's institutional GPA would show. This is the mathematical reality that many students pursuing a second bachelor's degree for medical school purposes encounter: the second degree helps, but the magnitude of improvement is bounded by the proportion of new credits to total credits.
GPA Improvement Math: What a Second Degree Actually Does
Understanding the math of how a second bachelor's degree affects a combined undergraduate GPA helps set realistic expectations before committing to 1–2 years of additional coursework. The key variable is the ratio of new credits to original credits.
| First Degree GPA | First Degree Credits | Second Degree Credits at 3.8 | Combined GPA |
|---|---|---|---|
| 2.5 | 120 | 60 | 2.93 |
| 2.5 | 60 | 60 | 3.15 |
| 3.0 | 120 | 60 | 3.27 |
| 3.0 | 60 | 60 | 3.40 |
| 2.0 | 60 | 60 | 2.90 |
| 2.0 | 120 | 60 | 2.60 |
The table shows that a second bachelor's degree is significantly more effective at improving a combined GPA when the first degree involved fewer credits (60 vs. 120). A student who completed a 60-credit first degree with a 2.5 GPA and then earns a 3.8 in 60 new credits achieves a 3.15 combined GPA. The same starting GPA after a full 120-credit first degree yields only a 2.93 combined GPA after the same 60 new credits of strong performance.
This is why some students whose first degree was at a community college or in an accelerated program (fewer total credits) find the second bachelor's more effective at moving the combined GPA than students who completed a full four-year degree.
Post-Baccalaureate Programs vs. Second Bachelor's Degree
Students who want to improve their academic record or fulfill prerequisites for professional school often face a choice between a post-baccalaureate program and a second bachelor's degree. These are meaningfully different options with different implications.
| Factor | Post-Baccalaureate Program | Second Bachelor's Degree |
|---|---|---|
| Credential granted | Certificate or no degree — coursework only | Full bachelor's degree credential |
| Credits required | Typically 15–30 credits of specific prerequisites | Typically 30–60 credits (varies by overlap) |
| Time to complete | Often 1–2 semesters | Often 2–4 semesters |
| AMCAS GPA treatment | Included as post-baccalaureate coursework in AMCAS GPA | Included as undergraduate coursework in AMCAS GPA |
| Best for | Targeted prerequisite completion; fastest path to application | Full credential in a new field; stronger signal for holistic programs |
| Institutional GPA visibility | No separate degree GPA — just individual course grades | New institutional bachelor's GPA visible on transcript |
For students primarily motivated by AMCAS or LSAC GPA improvement, the difference is largely one of degree vs. no degree — the GPA math works similarly, since both programs' courses are included in the calculation. Where a second bachelor's degree has an advantage over post-baccalaureate coursework is in presenting a complete credential in the new field: some graduate programs, employers, and licensing boards may respond more favorably to a full degree than to a collection of post-baccalaureate courses without a degree credential attached.
How Employers Read a Second Bachelor's Degree Transcript
Employers vary significantly in how they handle candidates with two undergraduate degrees. The experience depends heavily on the industry, the role level, and how the employer's application system works.
Corporate GPA screens (large employers, automated systems): Many large companies that use GPA as an automated filter in their application tracking systems (ATS) typically look for the most recent or highest GPA when evaluating candidates. In practice, candidates with two transcripts often enter one GPA value in the application field — the second degree institutional GPA if it is higher. Some ATS systems will not flag this as an issue if the resume is otherwise consistent. If you are asked to upload transcripts as part of the application, both will be visible. Misrepresenting your GPA by entering only the favorable number when additional context would change the picture is a risk not worth taking; most employers conduct transcript verification, and a discrepancy discovered later is a more serious problem than a lower GPA disclosed upfront.
Technical fields (engineering, data science, software): In many technical roles, skills assessments, portfolios, GitHub activity, and technical interviews carry more weight than GPA screens. Candidates with a second bachelor's in a technical field who demonstrate strong practical competence may find that the GPA question becomes secondary to the demonstrated skills question fairly quickly in the hiring process.
Government and civil service: Federal civil service positions generally evaluate qualifications based on education and experience, not GPA, unless the position specifically qualifies under Superior Academic Achievement (SAA) provisions, which require a 3.0 or top-third class standing. For most federal positions, holding a relevant degree and meeting the minimum experience requirements matters more than the GPA level.
Graduate school faculty and research roles: For positions in academia or research that require strong graduate credentials, the underlying undergraduate GPA matters less than the graduate GPA, research output, publications, and professional recommendations. A second bachelor's that provided strong preparation for a successful graduate career is valued through what it enabled downstream, not as a credential in itself.
The most practical advice: know what the employer is actually asking. Some application forms ask for "undergraduate GPA" — clarify whether that means cumulative across all institutions or the most recent institutional GPA. When in doubt, disclose both with context, which gives you the opportunity to frame the second degree as evidence of initiative and growth rather than concealing information.
How Different Institutions Handle Second Bachelor's Enrollment
Not all institutions offer second bachelor's degree programs in the same way, and the policies that govern second bachelor's enrollment affect how the GPA is treated and how the degree functions as a credential.
Second Degree at the Same Institution
Some students complete a second bachelor's degree at the same institution where they completed the first. In this case, there is only one institutional GPA — the same cumulative GPA that already includes the first degree's coursework. There is no "new" institutional GPA; the cumulative calculation continues. A student who earned a 2.8 in their first degree at State University and then earns a second bachelor's at State University in a different major is simply adding more courses to the same GPA. Every new course contributes to the same running cumulative GPA. The second degree is awarded when the new major's requirements are fulfilled, but the GPA on both degrees comes from the same calculation.
Second Degree at a Different Institution (Most Common for GPA Purposes)
The typical path for students seeking a distinct institutional GPA is to complete the second bachelor's at a new institution. This creates the separate institutional GPA dynamic described throughout this guide: the new school's GPA reflects only new coursework, while the original school's GPA remains on the original transcript. Both transcripts are submitted to any graduate program or professional school.
Community College Credits and Second Degrees
Some second bachelor's degree students take a portion of their new coursework at community colleges for cost reasons. Community college courses completed as part of a second bachelor's degree program transfer to the four-year institution where the degree is being completed, and the same rules apply: they transfer as credit but not as grade points in the receiving institution's GPA. For AMCAS, LSAC, and graduate programs that request all transcripts, community college courses from the second degree period are included alongside everything else.
Online and Regional Institution Policies
Some students pursue second bachelor's degrees at online universities or regional institutions that offer more flexible credit acceptance policies. The degree credential value of these programs varies by field and by the recognition of the institution. A second bachelor's from a regionally accredited institution is recognized as a legitimate credential; the quality of that institution's name recognition may vary in highly competitive job markets or graduate school applicant pools. For GPA purposes, the calculation mechanics are identical — new institutional GPA at the new school, both transcripts to graduate programs.
When a Second Bachelor's Degree Makes Strategic Sense
A second bachelor's degree is a significant commitment of time and money. It makes the most strategic sense in the following situations:
Career pivot into a credentialed field: Fields like nursing, education, engineering, or computer science sometimes require a bachelor's degree specifically in that field for entry-level licensing or employment. A second bachelor's provides the credential that a post-baccalaureate certificate may not. If the goal is to work in the new field, not primarily to improve a GPA for graduate school, the credential value of the second degree is its primary benefit. A nursing BSN, a bachelor's in civil engineering, or a bachelor's in computer science signals field-specific competence in a way that a generic post-baccalaureate certificate of completion does not.
Graduate programs that weight recent performance: Some master's programs — particularly in professional and technical fields — evaluate recent academic performance most heavily. A student with a weak first degree from many years ago who completes a second bachelor's with strong grades may present a significantly stronger recent academic record to these programs than a post-baccalaureate certificate would. The faculty reading the application see a complete degree completed with strong performance, not just a list of individual prerequisite courses.
AMCAS-calculated GPA improvement when the first degree was short: As the math above illustrates, a second bachelor's degree improves the combined AMCAS GPA more significantly when the original degree involved fewer total credits. Students with a short or light original degree who need to demonstrate strong academic science performance for medical school may find the second bachelor's the most efficient path, particularly if the science prerequisites can be embedded within the new degree's requirements. The sciences GPA (BCPM — Biology, Chemistry, Physics, Math) is calculated separately by AMCAS and matters significantly for medical school competitiveness; a second bachelor's in a pre-health or science field can build this score substantially.
When the alternative is retaking many individual courses without a coherent program: Some students find it more motivating and structured to complete a full program than to cobble together individual courses as a post-baccalaureate student. The program structure of a second bachelor's also provides access to academic advising, networking with faculty, and research or internship opportunities that individual course enrollment may not. For students who benefit from an academic community and structured deadlines, the program environment of a second degree may produce stronger grades than independent post-baccalaureate study would.
When a Second Bachelor's May Not Be the Right Choice
The financial and time cost of a second bachelor's is substantial. It is not always the best path:
When the combined GPA math will not move enough to matter: If you completed a full 120-credit first degree with a low GPA, the mathematical improvement from 60 additional credits — even at a perfect 4.0 — may not be enough to clear the GPA threshold that matters for your specific target. If the goal is a 3.5 combined GPA for a medical school application after a 2.0 first degree, the math shows this is impossible without a near-perfect 4.0 over a very large number of additional credits. Do the math before committing to 2 years and $50,000+ of additional education.
When a master's program with an upward GPA trend would be more efficient: Some students are better served by applying directly to master's programs that consider holistic factors — work experience, recommendations, GRE scores — alongside a transparent explanation of their first-degree performance. Accepted to a master's program with conditions (maintain a 3.0 GPA to continue), then performing well, can lead to PhD program admission more efficiently than spending 2 years on a second bachelor's first.
When the career goal doesn't actually require it: Some students pursue a second bachelor's believing it is required for a career pivot when it is not. Many graduate programs in business, public policy, public health, and data science accept applicants from any undergraduate major background. Before committing to a second bachelor's in a specific field, confirm with the actual target graduate programs whether the first bachelor's would have been accepted as background for admission with strong supporting credentials.
Common Misconceptions About Second Bachelor's GPA
Misconception 1: "A Second Bachelor's Degree Erases the First Degree's GPA"
No. Both transcripts are permanent, and any reviewer who requests all undergraduate transcripts — which is standard for graduate and professional school applications — will see both. The second degree's institutional GPA does not replace the first; they are viewed alongside each other. AMCAS, LSAC, and most graduate schools calculate a combined GPA from all coursework.
Misconception 2: "Transferred Credits From the First Degree Are Averaged Into the New GPA"
Incorrect. Credits transferred from the first degree are accepted as satisfied requirements but are not averaged into the new institutional GPA. Only courses taken at the new institution contribute grade points to the new school's GPA. This is why the new institutional GPA can be significantly higher than the combined GPA: it reflects only the new coursework.
Misconception 3: "Post-Baccalaureate Courses Don't Count in AMCAS GPA"
Post-baccalaureate courses are included in the AMCAS GPA calculation. AMCAS labels them separately to show that they were taken after bachelor's degree completion, but they are included in the overall GPA calculation, not excluded. This is true whether they were taken as part of a formal post-baccalaureate program or as individual course enrollments.
Misconception 4: "A Higher GPA in the Second Degree Always Means a Better Graduate School Application"
It depends on the degree of improvement and what the graduate program weights. A combined GPA of 3.15 from a 2.5 first degree and a 3.8 second degree may still fall below a program's minimum screen of 3.3, even though the applicant's most recent work was outstanding. Research each target program's approach to multiple transcripts and minimum GPA screens before assuming that the second degree's high GPA speaks for itself in the application.
Misconception 5: "The Second Bachelor's GPA Is What Goes on My Resume"
There is no universally enforced rule about which GPA to report on a resume, but misrepresentation is a significant professional risk. If your second bachelor's institutional GPA is 3.7 and your first bachelor's institutional GPA was 2.4, reporting "GPA: 3.7" without qualification could be misleading in contexts where the employer would otherwise ask for all transcripts. Many employers verify academic credentials through background check firms that pull transcripts from all listed institutions. Discrepancies between a reported GPA and a verified combined GPA can result in offer rescission. The safest approach: be clear about which GPA you are reporting. "Second Bachelor's GPA: 3.7 (XYZ University, 2022–2024)" is specific and honest. If the resume asks for cumulative undergraduate GPA, report the combined number or note that you have multiple degrees.
Misconception 6: "A Second Bachelor's Degree and a Master's Degree Are Comparable Credentials"
A second bachelor's degree is still an undergraduate credential. It does not carry the same signaling weight as a master's degree in most employment and graduate admissions contexts. For students deciding between pursuing a second bachelor's or a master's degree, it is worth noting that a master's degree directly advances academic credentials to a graduate level — which many employers and doctoral programs respond to differently than an additional undergraduate degree. A second bachelor's may be necessary when the field requires it (e.g., BSN for nursing licensure) or when graduate program prerequisites are best fulfilled within a structured degree program. But if the primary goal is career advancement or graduate school positioning and those goals could be met by a relevant master's program, the second bachelor's path may represent a longer route to the same destination.
Misconception 7: "Only the Most Recent Transcript Matters for Employers"
Many background verification processes used by employers and licensing boards require disclosure of all institutions attended and submission of official transcripts from each. An employment application that asks "list all colleges and universities attended" expects a complete answer. Failing to disclose the first institution because you prefer only the second transcript to be seen is an omission that background checks frequently catch. The low GPA on the first transcript rarely disqualifies a candidate outright after successful employment interviews and strong second-degree performance — but discovered omission absolutely can. Transparency is the consistently safer strategy.
Key Takeaways: Second Bachelor's Degree and GPA
Understanding the GPA mechanics of a second bachelor's degree before committing to one is essential for setting realistic expectations. The core dynamics to remember:
Two institutional GPAs, one combined record. The new institution's GPA is real and reflects your recent performance — but it does not erase the first. Any reviewer who requests all transcripts sees both, and application systems like AMCAS and LSAC calculate a combined GPA from all undergraduate coursework without exception.
The math improves the combined GPA, but not as much as the new institutional GPA suggests. A 3.8 second-degree institutional GPA from 60 credits of new work after a 120-credit first degree at 2.5 produces a combined GPA of 2.93 — genuinely improved over 2.5, but nowhere near 3.8. The improvement is proportional to the ratio of new credits to original credits. Do this math for your specific situation before deciding whether the improvement is large enough to matter for your goals.
Credential value and GPA improvement are separate questions. The second bachelor's degree may be worth pursuing for the credential itself — the degree in a new field, the professional licensure eligibility, the access to a specific career pathway — independent of what it does to your GPA calculation. When the credential value is the primary justification, the GPA improvement is a secondary benefit rather than the central rationale.
Always verify with your specific target programs. How graduate programs, professional schools, licensing boards, and employers treat multiple undergraduate transcripts varies significantly. The patterns described in this guide are common ones, but institutional policies differ in meaningful ways. A direct inquiry to your target program's admissions office asking how they evaluate applicants with two undergraduate degrees will give you specific, actionable information for that specific program — information that is more reliable than any general guidance.
Frequently Asked Questions
Does a second bachelor's degree reset your GPA?
A second bachelor's degree starts a new institutional GPA at the granting institution — courses from the first degree are not included in the new cumulative GPA. However, your first bachelor's transcript remains part of your permanent record and is included in GPA calculations by graduate schools, professional programs, and centralized systems like AMCAS and LSAC.
How are transfer credits handled in a second bachelor's degree?
Transfer credits from the first degree are accepted as satisfied requirements but are NOT included in the new institution's GPA calculation. They appear on the transcript with credit hours but no grade points. Only courses taken at the new institution contribute to the new institutional GPA.
Do graduate schools see both bachelor's degree GPAs?
Yes. Graduate programs request all undergraduate transcripts from all institutions attended. Most see both the first and second bachelor's transcripts and either calculate a combined GPA or evaluate both separately. There is no standard way to present only one transcript to a graduate program.
Can a second bachelor's degree help you get into graduate school?
It can help by demonstrating recent strong academic performance in the relevant field. If your second bachelor's GPA is significantly higher than the first, some programs — particularly those that evaluate applications holistically — may weight the more recent record more heavily. For AMCAS and LSAC programs, the combined GPA improves mathematically but does not replace the first record.
How many credits does a second bachelor's degree typically require?
Second bachelor's degrees typically require 30 to 60 additional credits beyond the first degree, depending on the overlap between programs and the institution's policies. Students with significant overlapping coursework may complete it in 2 semesters; those entering a very different field may need 3–4 semesters. The registrar determines which prior credits satisfy which requirements.
Does AMCAS include second bachelor's courses in the medical school GPA?
Yes. AMCAS includes all undergraduate coursework taken at any institution, regardless of whether a degree was granted. Every course from both bachelor's programs is included in the AMCAS GPA calculation. A strong second degree record improves the cumulative calculation but does not produce a separate, higher GPA.
Is a second bachelor's degree worth it for GPA improvement?
It depends on the purpose. For programs that evaluate transcripts holistically and weight recent performance, a second bachelor's with strong grades meaningfully improves an applicant's position. For programs using cumulative GPA calculations across all undergraduate work, improvement is real but mathematically bounded. Sixty credits at 3.8 after a 120-credit first degree at 2.5 yields a combined 2.93 — a real gain, but not a clean slate.
What is the difference between a second bachelor's degree and a post-baccalaureate program?
A second bachelor's degree grants a new bachelor's credential. A post-baccalaureate program is a non-degree coursework sequence for prerequisites or field changes. Post-baccalaureate coursework is included in AMCAS GPA calculations. The primary difference is credentialing: a second bachelor's grants a degree; post-baccalaureate programs typically do not.
Can international students use a second bachelor's degree to improve their GPA for U.S. graduate programs?
A U.S. second bachelor's degree provides a directly comparable institutional GPA for U.S. programs, which some international students find advantageous compared to foreign transcript evaluation. Verify with each target program how they treat foreign vs. domestic transcripts and whether a second U.S. bachelor's changes their evaluation approach.
Does nursing or education licensure consider the first bachelor's GPA?
State licensing boards for nursing, education, and other regulated professions typically require degree completion and passage of licensure examinations rather than GPA thresholds. However, graduate-level programs in these fields may evaluate GPA from all transcripts when making admissions decisions. The licensing exam itself — NCLEX for nursing, Praxis for education — is typically more determinative for entry-level practice than undergraduate GPA.
Related Sources
- Association of American Medical Colleges (AAMC). AMCAS Application Instructions — Transcript and GPA — official guidance on how all undergraduate coursework is included in the AMCAS GPA calculation. aamc.org
- Law School Admission Council (LSAC). CAS GPA Calculation — how LSAC calculates cumulative GPA from all undergraduate institutions for law school applications. lsac.org
- National Center for Education Statistics. Transfer Students: Postsecondary Credit Transfer — national data on how transfer credit is treated across institutions and its effect on degree completion. nces.ed.gov