# School City, state Students per class year Class year Source
1 Phillips Academy (Andover) Andover, MA 5.0
5 over 1 class year
Class of 2024 School's published list
2 Noble and Greenough School Dedham, MA 4.0
20 over 5 class years
2021–2025 School's published list
3 Middlesex School Concord, MA 4.0
4 over 1 class year
Class of 2026 School's published list
4 The Mountain School of Milton Academy Vershire, VT 3.4
17 over 5 class years
2021-2025 School's published list
5 Milton Academy Milton, MA 3.3
10 over 3 class years
2024-2026 School's published list
6 Choate Rosemary Hall Wallingford, CT 3.0
15 over 5 class years
IN THE PAST FIVE YEARS, (CLASS OF 2022-2026) School's published list
7 Rye Country Day School Rye, NY 3.0
3 over 1 class year
Class of 2026 School's published list
8 St. Paul's School (NH) Concord, NH 2.5
5 over 2 class years
College Matriculation for the Forms of 2025 and 2026 (combined two-year TOTAL column) School's published list
9 Marin Academy San Rafael, CA 2.3
7 over 3 class years
CLASSES OF 2023–2025 School's published list
10 Ethical Culture Fieldston School New York, NY 2.2
11 over 5 class years
Classes of 2022–2026 School's published list
11 The Taft School Watertown, CT 2.2
11 over 5 class years
past five years (2020-2024) School's published list
12 The Hotchkiss School Lakeville, CT 2.2
9 over 4 class years
Classes of 2023, 2024, 2025, and 2026 School's published list
13 The Lawrenceville School Lawrenceville, NJ 2.0
10 over 5 class years
the last five years School's published list
14 The Potomac School Mclean, VA 2.0
8 over 4 class years
past four years School's published list
15 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
16 Delbarton School Morristown, NJ 2.0
2 over 1 class year
Class of 2026 School's published list
17 St Ignatius College Prep Chicago, IL 2.0
2 over 1 class year
CLASS OF 2026 School's published list
18 Suffield Academy Suffield, CT 2.0
2 over 1 class year
Class of 2025 School's published list
19 The Williston Northampton School Easthampton, MA 2.0
2 over 1 class year
Class of 2026 / Classes of 2022-2025 School's published list
20 Woodside Priory School Portola Valley, CA 2.0
2 over 1 class year
Class of 2026 School's published list
21 Groton School Groton, MA 1.8
9 over 5 class years
2022–2026 School's published list
22 Lakeside School Seattle, WA 1.8
9 over 5 class years
2021-2025 School's published list
23 Belmont Hill School Belmont, MA 1.6
8 over 5 class years
2022-2026 School's published list
24 Landon School Bethesda, MD 1.5
6 over 4 class years
College Admittance 2023-2026 School's published list
25 Nightingale-Bamford School New York, NY 1.5
6 over 4 class years
2022–2025 School's published list
26 College Preparatory School Oakland, CA 1.4
7 over 5 class years
the last five years School's published list
27 Durham Academy Durham, NC 1.4
7 over 5 class years
2021–2025 School's published list
28 Germantown Friends School Philadelphia, PA 1.3
4 over 3 class years
2023-25 School's published list
29 Riverdale Country School Bronx, NY 1.2
7 over 6 class years
Higher Ed Enrollment 2021-2026 School's published list
30 Packer Collegiate Institute Brooklyn, NY 1.2
6 over 5 class years
2021 - 2025 School's published list
31 Pingree School South Hamilton, MA 1.2
6 over 5 class years
2021–2025 School's published list
32 St. Sebastian's School Needham, MA 1.2
6 over 5 class years
past five years School's published list
33 The Blake School Hopkins, MN 1.2
6 over 5 class years
Classes 2021-2025 School's published list
34 The Rivers School Weston, MA 1.2
6 over 5 class years
2022-2026 School's published list
35 The Derryfield School Manchester, NH 1.2
5 over 4 class years
2022-2025 School's published list
36 The Pingry School Basking Ridge, NJ 1.2
5 over 4 class years
2022-2025 School's published list
37 Beaver Country Day School Chestnut Hill, MA 1.0
5 over 5 class years
Five Year Summary 2022-2026 School's published list
38 The Brearley School New York, NY 1.0
5 over 5 class years
2022–2026 School's published list
39 The Westminster Schools Atlanta, GA 1.0
5 over 5 class years
Classes 2021-2025 School's published list
40 Urban School of San Francisco San Francisco, CA 1.0
5 over 5 class years
2022-2026 School's published list
41 Waynflete School Portland, ME 1.0
5 over 5 class years
Five-Year Matriculation (2021–2025) School's published list
42 Colorado Academy Denver, CO 1.0
4 over 4 class years
Classes 2022-2025 School's published list
43 Northfield Mount Hermon Mount Hermon, MA 1.0
4 over 4 class years
the past four years School's published list
44 Winsor School Boston, MA 1.0
4 over 4 class years
2022–2025 School's published list
45 The Putney School Putney, VT 1.0
3 over 3 class years
(2023-2025) School's published list
46 Avenues the World School New York, NY 1.0
1 over 1 class year
CLASSES OF 2023–2026 School's published list
47 Bishop Feehan Attleboro, MA 1.0
1 over 1 class year
Class of 2026 School's published list
48 Commonwealth School Boston, MA 1.0
1 over 1 class year
Class of 2022 School's published list
49 Dana Hall School Wellesley, MA 1.0
1 over 1 class year
Class of 2026 School's published list
50 Fenwick High School Oak Park, IL 1.0
1 over 1 class year
Class of 2025 School's published list

The 50 largest of 138 ranked private schools.

Also published, with a total but no class-year window we can read, so not ranked: Woodlawn School (2).

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