TL;DR: The Common Data Set is a standardized annual disclosure that most American colleges publish, built on a shared questionnaire developed collaboratively by the College Board, Peterson’s, and U.S. News so that institutional data is reported the same way everywhere. Its sections run A through J, and three matter most to applicants: C1, which contains the raw application, admission, and enrollment counts behind every acceptance rate; C7, the grid where each college rates the importance of every admission factor from grades to interviews; and C9 through C11, the admitted class test score and GPA profile. Finding one takes ten seconds: search the college’s name plus Common Data Set, and the institutional research office’s PDF or spreadsheet almost always appears.
Sources: Common Data Set Initiative; university institutional research offices.
Why the Common Data Set Exists and Why It Beats Marketing Pages
Colleges answer thousands of data requests from guidebooks, rankings, and government surveys, and the Common Data Set began as a truce: one shared questionnaire, answered once a year, published in a standard format. The accidental beneficiary is the applicant family. Because every school answers the same questions the same way, the CDS is the rare document where Harvard, a state flagship, and a small liberal arts college can be compared line by line without marketing interference. Admissions pages tell you what a college wants you to feel; the CDS tells you what it counted.
Participation is voluntary, and that is the catch. Most selective colleges publish faithfully each fall, a few publish late, and a handful decline entirely or omit sections they would rather not discuss. Our College Admissions Transparency Index grades exactly this behavior across fifty schools, because the decision not to publish is itself information.
The Sections That Matter: A Reader’s Map
| CDS Section | What It Contains | Why Applicants Care |
|---|---|---|
| A and B | Institutional basics and enrollment counts | Context only |
| C1 to C3 | Applications, admits, enrollments by gender and residency | The raw math behind every acceptance rate |
| C7 | Importance grid for every admission factor | The closest thing to a published admissions rubric |
| C9 to C11 | Test score ranges, submission shares, GPA distribution | The real admitted class profile |
| C21 | Early Decision applications and admits where disclosed | The ED advantage, quantified |
| D | Transfer admission counts and requirements | The transfer acceptance rate source |
| G and H | Cost of attendance and financial aid detail | Net price reality behind sticker shock |
How to Actually Read a C7 Grid
Section C7 asks each college to rate nineteen factors, from rigor of secondary school record to work experience, on a four point scale: very important, important, considered, or not considered. Read it in two passes. First, find what sits alone at the top: a school marking only rigor, grades, and essays as very important is telling you its reading order. Second, find the surprises at the bottom: interview marked not considered kills a myth, demonstrated interest marked considered confirms that engagement tracking is real at that campus, and legacy’s placement answers a question families ask constantly. Compare grids across a list and the schools stop looking interchangeable; the document our demonstrated interest guide draws on for its school table is C7, nothing more exotic.
One honest caveat travels with the grid: C7 reports what a college says it weighs, and institutional self description deserves the same scrutiny as any self description. The counts in C1 and C21 do not editorialize, which is why the numeric sections anchor serious analysis while C7 frames it. Every acceptance rate page we publish, from Boston University to the full Ivy League table, cites the CDS counts precisely because they are the closest thing admissions has to audited numbers.
Frequently Asked Questions About the Common Data Set
The Common Data Set is a standardized annual disclosure most American colleges publish, built on a shared questionnaire developed by the College Board, Peterson’s, and U.S. News. It reports admissions counts, admitted class profiles, factor importance ratings, costs, and financial aid in the same format at every participating school.
Search the college’s name together with the phrase Common Data Set. The institutional research office’s PDF or spreadsheet typically appears first, organized by year. If nothing surfaces for recent years, the school may simply not publish, which is itself worth knowing.
C7 is the factor importance grid, where each college rates nineteen admission factors as very important, important, considered, or not considered. It is the closest thing to a published rubric, covering rigor, grades, scores, essays, recommendations, interviews, legacy, and demonstrated interest.
Section C1 reports total applicants, admitted students, and enrollees, and dividing admits by applicants yields the acceptance rate. Section C21, where completed, reports the same counts for Early Decision, which is how the ED advantage gets quantified.
No. Participation is voluntary, and while most selective colleges publish annually, some publish late, omit sensitive sections, or decline entirely. A school’s disclosure behavior is a transparency signal in its own right and varies more than families expect.
Each edition covers the prior admissions cycle and typically publishes in late fall or winter, so the newest CDS always trails the most recent admitted class by several months. For the very latest cycle, university press releases and enrollment reports fill the gap until the CDS lands.
No. IPEDS is the federal reporting system administered by the Department of Education, mandatory and machine readable, while the CDS is a voluntary publisher collaboration. They overlap on enrollment and outcomes, but C7 factor ratings and the admissions detail families want exist only in the CDS.
Sources: Common Data Set Initiative, Harvard Office of Institutional Research, IPEDS, NCES College Navigator, NACAC.
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