#49 Private Schools with the Smallest Classes in the U.S.
Fusion Academy Ob: Chicago- Oak Brook
Alternative school · Grades 6–12
2.2 students per teacher
Oak Brook, IL
AOverall grade43 students2 students per teacher
2026 lists
Private Schools with the Smallest Classes in the U.S.
Private schools in the U.S. with the fewest students per teacher (not counting preschools and special education schools). Top 50 of 14,207 schools.
#50 Private Schools with the Smallest Classes in the U.S.
Gan Yisroel
Jewish day school · Grades Pre-K–7
2.3 students per teacher
Brooklyn, NY
B+Overall gradeAll girls245 students2 students per teacher
From official public records, updated October 2026.