2026 lists

Largest Private Schools in Gaithersburg, MD

The private schools in Gaithersburg, MD with the most students. Top 6 of 6 schools.

#1 Largest Private Schools in Gaithersburg, MD

Christian school (nondenominational) · Grades Pre-K–12

444 students

Gaithersburg, MD

B+Overall grade444 students11 students per teacher

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#2 Largest Private Schools in Gaithersburg, MD

Independent Catholic school · Grades Pre-K–8

198 students

Gaithersburg, MD

A+Overall grade198 students13 students per teacher

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#3 Largest Private Schools in Gaithersburg, MD

Parish school · Grades Pre-K–8

193 students

Gaithersburg, MD

B+Overall grade193 students14 students per teacher

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#4 Largest Private Schools in Gaithersburg, MD

Parish school · Grades Pre-K–8

186 students

Gaithersburg, MD

A+Overall grade186 students13 students per teacher

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#5 Largest Private Schools in Gaithersburg, MD

Special education school · Grades 4–12

68 students

Gaithersburg, MD

BOverall grade68 students8 students per teacher

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#6 Largest Private Schools in Gaithersburg, MD

Special education school · Grades 8–12

42 students

Gaithersburg, MD

B+Overall grade42 students18 students per teacher

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From official public records, updated October 2026.