# School City, state Students per class year Class year Source
1 Marin Academy San Rafael, CA 3.0
9 over 3 class years
CLASSES OF 2023–2025 School's published list
2 Thacher School the Ojai, CA 3.0
3 over 1 class year
Class of 2026 Matriculation School's published list
3 The Blake School Hopkins, MN 2.6
13 over 5 class years
Classes 2021-2025 School's published list
4 Menlo School Atherton, CA 2.0
6 over 3 class years
Classes of 2023-2025 School's published list
5 Brunswick School Greenwich, CT 2.0
2 over 1 class year
Class of 2026 Matriculation; Composite Matriculation List of 2022-2026 School's published list
6 Harvard-Westlake School Studio City, CA 2.0
2 over 1 class year
BY THE CLASSES OF 2021-2025 School's published list
7 Phillips Academy (Andover) Andover, MA 2.0
2 over 1 class year
Class of 2024 School's published list
8 The Webb Schools Claremont, CA 2.0
2 over 1 class year
Class of 2026 School's published list
9 The Bush School Seattle, WA 1.8
11 over 6 class years
2020-2025 School's published list
10 The Mountain School of Milton Academy Vershire, VT 1.8
9 over 5 class years
2021-2025 School's published list
11 The Taft School Watertown, CT 1.8
9 over 5 class years
past five years (2020-2024) School's published list
12 Eastside Preparatory School Kirkland, WA 1.6
8 over 5 class years
2021-2025 School's published list
13 Northfield Mount Hermon Mount Hermon, MA 1.5
6 over 4 class years
the past four years School's published list
14 Lakeside School Seattle, WA 1.4
7 over 5 class years
2021-2025 School's published list
15 The Putney School Putney, VT 1.3
4 over 3 class years
(2023-2025) School's published list
16 Cate School Carpinteria, CA 1.2
6 over 5 class years
2022-2026 School's published list
17 University Prep Seattle, WA 1.2
6 over 5 class years
2022–2026 School's published list
18 Catlin Gabel School Portland, OR 1.2
5 over 4 class years
last four years School's published list
19 Thayer Academy Braintree, MA 1.2
5 over 4 class years
2020-23 School's published list
20 Beaver Country Day School Chestnut Hill, MA 1.0
5 over 5 class years
Five Year Summary 2022-2026 School's published list
21 Concord Academy Concord, MA 1.0
5 over 5 class years
2021 to 2025 School's published list
22 Ethical Culture Fieldston School New York, NY 1.0
5 over 5 class years
Classes of 2022–2026 School's published list
23 Santa Fe Preparatory School Santa Fe, NM 1.0
5 over 5 class years
2022-2026 School's published list
24 The Head-Royce School Oakland, CA 1.0
5 over 5 class years
(2021–25) School's published list
25 Lick Wilmerding High School San Francisco, CA 1.0
4 over 4 class years
past four years School's published list
26 Branson School Ross, CA 1.0
3 over 3 class years
Branson Classes of 2024-2026 School's published list
27 St. Paul's School (NH) Concord, NH 1.0
2 over 2 class years
College Matriculation for the Forms of 2025 and 2026 (combined two-year TOTAL column) School's published list
28 Berkshire School Sheffield, MA 1.0
1 over 1 class year
Class of 2021 School's published list
29 Blair Academy Blairstown, NJ 1.0
1 over 1 class year
Class of 2026 School's published list
30 Chadwick School Palos Verdes Estate, CA 1.0
1 over 1 class year
Class of 2025 School's published list
31 Providence Day School Charlotte, NC 1.0
1 over 1 class year
Class of 2026 School's published list
32 St. Paul Academy and Summit School St. Paul, MN 1.0
1 over 1 class year
Class of 2025 School's published list
33 Tabor Academy Marion, MA 1.0
1 over 1 class year
Class of 2025 Matriculation School's published list
34 The Columbus Academy Gahanna, OH 1.0
1 over 1 class year
Class of 2026 School's published list
35 Western Reserve Academy Hudson, OH 1.0
1 over 1 class year
Class of 2026 School's published list
36 Gould Academy Bethel, ME 0.8
5 over 6 class years
Matches made by Gould students from 2020 to 2025 School's published list
37 Choate Rosemary Hall Wallingford, CT 0.8
4 over 5 class years
IN THE PAST FIVE YEARS, (CLASS OF 2022-2026) School's published list
38 Packer Collegiate Institute Brooklyn, NY 0.8
4 over 5 class years
2021 - 2025 School's published list
39 Waynflete School Portland, ME 0.8
4 over 5 class years
Five-Year Matriculation (2021–2025) School's published list
40 Colorado Academy Denver, CO 0.8
3 over 4 class years
Classes 2022-2025 School's published list
41 Francis Parker School San Diego, CA 0.8
3 over 4 class years
2022-2025 School's published list
42 Dalton School New York, NY 0.7
4 over 6 class years
2019-2024 School's published list
43 Crossroads School Santa Monica, CA 0.7
2 over 3 class years
classes of 2023-25 School's published list
44 The Harker School San Jose, CA 0.7
2 over 3 class years
Classes of 2023, 2024 & 2025 School's published list
45 Durham Academy Durham, NC 0.6
3 over 5 class years
2021–2025 School's published list
46 Greens Farms Academy Westport, CT 0.6
3 over 5 class years
Class of 2022-2026 School's published list
47 Laurel School Shaker Heights, OH 0.6
3 over 5 class years
2021-2025 School's published list
48 Noble and Greenough School Dedham, MA 0.6
3 over 5 class years
2021–2025 School's published list
49 Oregon Episcopal School Portland, OR 0.6
3 over 5 class years
Classes of 2022-26 School's published list
50 Pingree School South Hamilton, MA 0.6
3 over 5 class years
2021–2025 School's published list

The 50 largest of 89 ranked private schools.

Also published, with a total but no class-year window we can read, so not ranked: St Andrew'S School (4).

All schools, public and private, and the lists of colleges that admitted each school's graduates, are on the Colorado College feeder leaderboard. More about the college: Colorado College.

Each count is copied from a list the school published about its own graduates: where they enrolled, one student at one college. The ranked figure is that count divided by the class years the school's list covers. A school that is not on this page did not publish a numbered matriculation list we could read — that is all absence means here. It is never a statement about a school's graduates. Lists of acceptances (where students were admitted, not where they enrolled) are never counted in this ranking: an acceptances list runs about three times an enrollment list, so counting the two together would compare different things. Those lists are ranked on their own, separately.