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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.

of colleges graduate more business majors than anything else
49%
median STEM share at colleges admitting under 20% (vs 13% at 60%+)
38%
colleges where one field is 40%+ of all graduates
106
of computer science graduates are women (85% in health)
24%
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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%.

FieldDegreesShare at tracked collegesNational shareColleges awarding it
Business, Management and Marketing288,97418.1%18.64%1011
Health Professions and Related Programs159,09510%12.8%797
Biological and Biomedical Sciences116,1487.3%6.62%910
Psychology115,7287.3%6.94%938
Social Sciences109,0936.8%6.11%737
Engineering107,8426.8%5.94%432
Computer and Information Sciences90,6075.7%6.22%725
Education70,5934.4%4.5%776
Visual and Performing Arts69,1424.3%4.63%751
Communication and Journalism68,3264.3%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 rateCollegesSTEM (median campus)EngineeringComputer scienceSocial sciencesBusiness
Under 20%6338%10.8%10.8%16.3%9.5%
20% to 59%19519%9.8%6.3%8.9%17.3%
60% and above82413%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.

CollegeFieldShare of graduatesDegrees in field
Babson CollegeBusiness, Management and Marketing100%721
Thomas Aquinas CollegeLiberal Arts and General Studies100%107
Cleary UniversityBusiness, Management and Marketing100%425
Bentley UniversityBusiness, Management and Marketing92.2%849
Northwood UniversityBusiness, Management and Marketing84.9%468
Evergreen State CollegeLiberal Arts and General Studies82.2%359
Bismarck State CollegeBusiness, Management and Marketing81.5%53
D'Youville UniversityHealth Professions and Related Programs79.9%255
Bryant UniversityBusiness, Management and Marketing79.1%636
Ursuline CollegeHealth Professions and Related Programs77.7%146
Arkansas Baptist CollegeBusiness, Management and Marketing75%15
SD School of MinesEngineering73.9%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 shareWomenLowest women's shareWomen
Family and Consumer Sciences88%Transportation and Materials Moving15%
Health Professions and Related Programs85%Engineering Technologies18%
Public Administration and Social Service84%Computer and Information Sciences24%
Education83%Engineering26%
Psychology80%Mathematics and Statistics38%

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.

Download the data

Every figure above is computed from this publicly reported data. Download and check it yourself.

Every field: degrees, share, colleges, women's share (CSV)
Engineering: every college ranked by graduates (CSV)
Business: every college ranked by graduates (CSV)
Computer science: every college ranked by graduates (CSV)

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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.