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2026 lists

Largest Private Schools in Washington, DC

The private schools in Washington, DC with the most students. Top 44 of 44 schools.

#25 Largest Private Schools in Washington, DC

St. Thomas More Catholic

Diocesan school · Grades Pre-K–8

153 students

Washington, DC

B+Overall grade153 students7 students per teacher

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From official public records, updated October 2026.

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