The Common Data Set is one of the most useful and underutilized tools in the college research process. Every serious college applicant and parent should know how to find and read it.
What Is the Common Data Set?
The Common Data Set (CDS) is a standardized annual report that colleges file voluntarily but widely. It contains comprehensive, verified data about admissions processes, enrolled student profiles, financial aid statistics, and more. It's the most transparent source of information about a college's actual admissions practices — more reliable than marketing materials.
How to Find It
Google '[school name] Common Data Set [year].' Most schools host the CDS on their institutional research or registrar's website. Look for the CDS labeled for the most recently completed admission cycle for the most current data.
The Most Important Sections
Section C7 — Relative Importance of Selection Factors: This invaluable section shows exactly which factors the school rates as 'very important,' 'important,' 'considered,' or 'not considered' — including grades, test scores, essays, recommendations, and demonstrated interest. This is the single most useful page for understanding a school's actual priorities versus their marketing claims.
Section C21 — Test Scores of Enrolled Students: 25th and 75th percentile SAT/ACT scores for enrolled students — the key data point for evaluating whether your score is competitive.
Section H — Financial Aid: Average financial aid award, percentage of students receiving aid, and average institutional grant.
Why It's More Reliable Than Marketing Materials
The CDS is used by U.S. News and other rankings publications for data validation. When a college claims to 'value essays highly' or 'consider demonstrated interest,' the Section C7 data will confirm or contradict those claims with actual survey data.