# School City, state Students per class year Class year Source
1 Milton Academy Milton, MA 4.3
13 over 3 class years
2024-2026 School's published list
2 St. Paul's School (NH) Concord, NH 4.0
8 over 2 class years
College Matriculation for the Forms of 2025 and 2026 (combined two-year TOTAL column) 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 Williston Northampton School Easthampton, MA 4.0
4 over 1 class year
Class of 2026 / Classes of 2022-2025 School's published list
5 Pingree School South Hamilton, MA 3.6
18 over 5 class years
2021–2025 School's published list
6 The Rivers School Weston, MA 3.2
16 over 5 class years
2022-2026 School's published list
7 Northfield Mount Hermon Mount Hermon, MA 3.2
13 over 4 class years
the past four years School's published list
8 Berkshire School Sheffield, MA 3.0
3 over 1 class year
Class of 2021 School's published list
9 Tabor Academy Marion, MA 3.0
3 over 1 class year
Class of 2025 Matriculation School's published list
10 Waynflete School Portland, ME 2.4
12 over 5 class years
Five-Year Matriculation (2021–2025) School's published list
11 St. Sebastian's School Needham, MA 2.2
11 over 5 class years
past five years School's published list
12 Choate Rosemary Hall Wallingford, CT 2.0
10 over 5 class years
IN THE PAST FIVE YEARS, (CLASS OF 2022-2026) School's published list
13 The Blake School Hopkins, MN 2.0
10 over 5 class years
Classes 2021-2025 School's published list
14 The Lawrenceville School Lawrenceville, NJ 2.0
10 over 5 class years
the last five years School's published list
15 The Hotchkiss School Lakeville, CT 2.0
8 over 4 class years
Classes of 2023, 2024, 2025, and 2026 School's published list
16 The Potomac School Mclean, VA 2.0
8 over 4 class years
past four years School's published list
17 Dana Hall School Wellesley, MA 2.0
2 over 1 class year
Class of 2026 School's published list
18 Falmouth Academy Falmouth, MA 2.0
2 over 1 class year
Class of 2026 School's published list
19 Phillips Academy (Andover) Andover, MA 2.0
2 over 1 class year
Class of 2024 School's published list
20 Sacred Heart Greenwich Greenwich, CT 2.0
2 over 1 class year
Class of 2026 School's published list
21 St. Luke's School (New Canaan) New Canaan, CT 2.0
2 over 1 class year
Class of 2026 / Classes 2021-2025 School's published list
22 St. Paul Academy and Summit School St. Paul, MN 2.0
2 over 1 class year
Class of 2025 School's published list
23 Thacher School the Ojai, CA 2.0
2 over 1 class year
Class of 2026 Matriculation School's published list
24 The Bryn Mawr School Baltimore, MD 2.0
2 over 1 class year
Class of 2026 School's published list
25 The Pingry School Basking Ridge, NJ 1.8
7 over 4 class years
2022-2025 School's published list
26 Kent School Kent, CT 1.7
5 over 3 class years
College Matriculations 2023-2025 School's published list
27 Ethical Culture Fieldston School New York, NY 1.6
8 over 5 class years
Classes of 2022–2026 School's published list
28 Noble and Greenough School Dedham, MA 1.6
8 over 5 class years
2021–2025 School's published list
29 The Taft School Watertown, CT 1.6
8 over 5 class years
past five years (2020-2024) School's published list
30 Wheeler School Providence, RI 1.5
6 over 4 class years
College Matriculation for the Classes of 2022-25 School's published list
31 Winsor School Boston, MA 1.5
6 over 4 class years
2022–2025 School's published list
32 Belmont Hill School Belmont, MA 1.4
7 over 5 class years
2022-2026 School's published list
33 Groton School Groton, MA 1.4
7 over 5 class years
2022–2026 School's published list
34 Poly Prep Country Day School Brooklyn, NY 1.4
7 over 5 class years
Classes of 2022-2026 School's published list
35 The Roxbury Latin School West Roxbury, MA 1.2
7 over 6 class years
2021-2026 School's published list
36 Convent of the Sacred Heart New York, NY 1.2
6 over 5 class years
2022-2026 School's published list
37 Lakeside School Seattle, WA 1.2
6 over 5 class years
2021-2025 School's published list
38 Nightingale-Bamford School New York, NY 1.2
5 over 4 class years
2022–2025 School's published list
39 Cate School Carpinteria, CA 1.0
5 over 5 class years
2022-2026 School's published list
40 Greenwich Academy Greenwich, CT 1.0
5 over 5 class years
2022-2026 School's published list
41 St. George's School Middletown, RI 1.0
5 over 5 class years
Classes of 2022-2026 School's published list
42 St. John's School Houston, TX 1.0
5 over 5 class years
Over the past five (2022-2026) graduating classes School's published list
43 The Mountain School of Milton Academy Vershire, VT 1.0
5 over 5 class years
2021-2025 School's published list
44 Colorado Academy Denver, CO 1.0
4 over 4 class years
Classes 2022-2025 School's published list
45 Marin Academy San Rafael, CA 1.0
3 over 3 class years
CLASSES OF 2023–2025 School's published list
46 Brooks School North Andover, MA 1.0
1 over 1 class year
Class of 2024 School's published list
47 Community School of Naples Naples, FL 1.0
1 over 1 class year
class of 2026 School's published list
48 Dwight-Englewood School Englewood, NJ 1.0
1 over 1 class year
Class of 2026 School's published list
49 Hopkins School New Haven, CT 1.0
1 over 1 class year
Class of 2026 School's published list
50 Oak Knoll School of the Holy Child Summit, NJ 1.0
1 over 1 class year
Class of 2026 School's published list

The 50 largest of 116 ranked private schools.

Also published, with a total but no class-year window we can read, so not ranked: St Andrew'S School (5).

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