# School City, state Students per class year Class year Source
1 Depaul College Prep Chicago, IL 2.0
2 over 1 class year
Class of 2025 School's published list
2 Marlborough School Los Angeles, CA 1.0
1 over 1 class year
Class of 2026 School's published list
3 Millbrook School Millbrook, NY 1.0
1 over 1 class year
Class of 2026 School's published list
4 Phillips Academy (Andover) Andover, MA 1.0
1 over 1 class year
Class of 2024 School's published list
5 The Webb Schools Claremont, CA 1.0
1 over 1 class year
Class of 2026 School's published list
6 Western Reserve Academy Hudson, OH 1.0
1 over 1 class year
Class of 2026 School's published list
7 Sage Hill School Newport Coast, CA 0.7
2 over 3 class years
2023-2025 School's published list
8 North Shore Country Day School Winnetka, IL 0.5
2 over 4 class years
2023-2026 School's published list
9 Portsmouth Abbey School Portsmouth, RI 0.3
1 over 3 class years
2024–2026 School's published list
10 Beaver Country Day School Chestnut Hill, MA 0.2
1 over 5 class years
Five Year Summary 2022-2026 School's published list
11 Canterbury School Fort Wayne, IN 0.2
1 over 6 class years
2019-2024 School's published list
12 John Burroughs School Saint Louis, MO 0.2
1 over 5 class years
2021-2025 School's published list
13 Phoenix Country Day School Paradise Valley, AZ 0.2
1 over 5 class years
Classes of 2021-25 School's published list
14 St. Sebastian's School Needham, MA 0.2
1 over 5 class years
past five years School's published list
15 Thomas Jefferson School Saint Louis, MO 0.2
1 over 5 class years
2021 - 2025 School's published list
16 Vermont Academy Saxtons River, VT 0.2
1 over 6 class years
Matriculation List (2021-2026) School's published list
17 Washington International School Washington, DC 0.2
1 over 4 class years
2022–2025 School's published list

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