CollegeCalcAI Research · Updated September 2026
What America's Colleges Actually Teach
We matched 1,594,778 bachelor's degrees from 1,082 four-year colleges to each college's acceptance rate. The most selective campuses are STEM and social-science schools; the rest of higher education is a business school with a hospital attached.
Business is the default major of American higher education
Business, Management and Marketing is the largest field at the 1,082 colleges we track: 288,974 bachelor's degrees in 2023, 18.1% of every degree awarded. It is the single most common field at 534 colleges (49%), more than the next five leaders combined; health professions is the leader at 216.
Five fields account for 49% of all bachelor's degrees: Business, Management and Marketing (18.1%), Health Professions and Related Programs (10%), Biological and Biomedical Sciences (7.3%), Psychology (7.3%), Social Sciences (6.8%). Everything students argue about on college forums, from philosophy to physics to foreign languages, lives in the remaining 51%.
| Field | Degrees | Share at tracked colleges | National share | Colleges awarding it |
|---|---|---|---|---|
| Business, Management and Marketing | 288,974 | 18.1% | 18.64% | 1011 |
| Health Professions and Related Programs | 159,095 | 10% | 12.8% | 797 |
| Biological and Biomedical Sciences | 116,148 | 7.3% | 6.62% | 910 |
| Psychology | 115,728 | 7.3% | 6.94% | 938 |
| Social Sciences | 109,093 | 6.8% | 6.11% | 737 |
| Engineering | 107,842 | 6.8% | 5.94% | 432 |
| Computer and Information Sciences | 90,607 | 5.7% | 6.22% | 725 |
| Education | 70,593 | 4.4% | 4.5% | 776 |
| Visual and Performing Arts | 69,142 | 4.3% | 4.63% | 751 |
| Communication and Journalism | 68,326 | 4.3% | 3.87% | 649 |
Largest fields of study across 1,082 four-year colleges (IPEDS 2023 completions, bachelor's degrees, first majors).
The most selective colleges teach a different curriculum
Sort the same colleges by acceptance rate and the curriculum changes. At the 63 colleges admitting fewer than 20% of applicants, the median campus awards 38% of its degrees in STEM fields (computer science, engineering, engineering technologies, biology, mathematics, physical sciences). At the 824 colleges admitting 60% or more, the median is 13%.
Business runs the other way: 9.5% of degrees at the most selective tier, 19.4% at the most accessible. Social sciences (economics, political science, sociology) are 16.3% of degrees at selective colleges and 5% at accessible ones. Computer science is offered (10 or more graduates) at 95% of the most selective colleges versus 66% of the most accessible; engineering at 62% versus 39%.
The practical point for applicants: a college's headline acceptance rate describes its whole applicant pool, but what that college is built to teach shapes who applies and who gets in. A business-heavy campus and a STEM-heavy campus with the same acceptance rate are not the same bet for the same student, which is why the calculator applies a per-major adjustment on top of each school's rate.
| Acceptance rate | Colleges | STEM (median campus) | Engineering | Computer science | Social sciences | Business |
|---|---|---|---|---|---|---|
| Under 20% | 63 | 38% | 10.8% | 10.8% | 16.3% | 9.5% |
| 20% to 59% | 195 | 19% | 9.8% | 6.3% | 8.9% | 17.3% |
| 60% and above | 824 | 13% | 5.3% | 4.9% | 5% | 19.4% |
Share of bachelor's degrees by field, grouped by the college's acceptance rate (degree-weighted; STEM is the median campus share).
One-field campuses
106 colleges award 40% or more of their bachelor's degrees in a single field, and 267 award 30% or more. Most are business or health-professions campuses; a few are deliberately single-curriculum colleges. For a student who might change majors, a one-field campus is a real constraint that no acceptance rate reveals.
| College | Field | Share of graduates | Degrees in field |
|---|---|---|---|
| Babson College | Business, Management and Marketing | 100% | 721 |
| Thomas Aquinas College | Liberal Arts and General Studies | 100% | 107 |
| Cleary University | Business, Management and Marketing | 100% | 425 |
| Bentley University | Business, Management and Marketing | 92.2% | 849 |
| Northwood University | Business, Management and Marketing | 84.9% | 468 |
| Evergreen State College | Liberal Arts and General Studies | 82.2% | 359 |
| Bismarck State College | Business, Management and Marketing | 81.5% | 53 |
| D'Youville University | Health Professions and Related Programs | 79.9% | 255 |
| Bryant University | Business, Management and Marketing | 79.1% | 636 |
| Ursuline College | Health Professions and Related Programs | 77.7% | 146 |
| Arkansas Baptist College | Business, Management and Marketing | 75% | 15 |
| SD School of Mines | Engineering | 73.9% | 264 |
Colleges most concentrated in one field of study (share of all bachelor's degrees).
Where the gender split is widest
Women earned 58% of the bachelor's degrees in this dataset, but the split by field is extreme. Health professions (85% women), education (83%) and psychology (80%) sit at one end; engineering (26%), computer science (24%) and engineering technologies (18%) at the other. Business, the largest field, is 44% women.
| Highest women's share | Women | Lowest women's share | Women |
|---|---|---|---|
| Family and Consumer Sciences | 88% | Transportation and Materials Moving | 15% |
| Health Professions and Related Programs | 85% | Engineering Technologies | 18% |
| Public Administration and Social Service | 84% | Computer and Information Sciences | 24% |
| Education | 83% | Engineering | 26% |
| Psychology | 80% | Mathematics and Statistics | 38% |
Women's share of bachelor's degrees by field (degree-weighted across tracked colleges, IPEDS completions by sex).
What this means for your college list
Three conclusions. First, pick colleges by what they actually graduate, not by reputation for a field: the field hub pages rank every tracked college by degrees awarded in each major. Second, if you are aiming at the most selective tier, expect a STEM- and social-science-heavy peer pool and an admissions read that weighs quantitative depth accordingly. Third, check the concentration of any college on your list; a campus that is 60% one field is a very specific place to spend four years.
Every figure here is computed from IPEDS completions joined to the same admissions dataset the free calculator uses. Run your profile with your intended major set to turn these population patterns into a per-school estimate.
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Frequently asked questions
What is the most popular college major?
Business, Management and Marketing: 288,974 bachelor's degrees in 2023 at the 1,082 colleges tracked (18.1% of all degrees), and the single most common field at 49% of colleges. Health professions, biology, psychology and social sciences complete the top five.
Do selective colleges have more STEM majors?
Yes. At colleges admitting fewer than 20% of applicants, the median campus awards 38% of degrees in STEM fields; at colleges admitting 60% or more, the median is 13%. Business is 9.5% of degrees at the most selective tier versus 19.4% at the most accessible.
Which majors have the fewest women?
Engineering technologies (18% women), computer science (24%) and engineering (26%) have the lowest women's share among large fields; health professions (85%) and education (83%) the highest. Women earned 58% of all bachelor's degrees in the dataset.
How many colleges are dominated by one major?
106 of 1,082 colleges award at least 40% of their bachelor's degrees in one field, and 267 award at least 30%. Business and health-professions campuses make up most of the list.
How was this study calculated?
Bachelor's degrees awarded by 2-digit CIP field (first majors) come from the U.S. Department of Education's IPEDS 2023 Completions survey via the Urban Institute's Education Data API, for the 1,082 four-year colleges in CollegeCalcAI's admissions dataset (1,594,778 degrees). Acceptance rates come from IPEDS admissions counts and Common Data Sets. Fields with fewer than 10 graduates at a college are excluded. Every figure is a count or a ratio of counts; nothing is modeled.
Methodology: figures are computed directly from CollegeCalcAI's dataset of four-year U.S. colleges, built on publicly reported data (U.S. Department of Education / NCES IPEDS / Common Data Sets). The dataset skews toward four-year, test-reporting institutions and under-represents open-admission and two-year colleges. Safety and target shares use the same transparent, deterministic model as the calculator; the full method is on the methodology page. Free to cite with attribution to CollegeCalcAI.