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2026 lists

Most Diverse Private Schools in Montgomery County, MD

Private schools in Montgomery County, MD with the most varied mix of students. Top 50 of 79 schools.

#1 Most Diverse Private Schools in Montgomery County, MD

Spencerville Adventist Academy

Seventh-day Adventist school · Grades Pre-K–12

Largest group: 22% of students

Spencerville, MD

AOverall grade399 students14 students per teacher

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#2 Most Diverse Private Schools in Montgomery County, MD

Julia Brown Montessori School

Montessori school · Grades Pre-K–3

Largest group: 25% of students

Silver Spring, MD

B+Overall grade55 students28 students per teacher

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#3 Most Diverse Private Schools in Montgomery County, MD

Butler Montessori

Montessori school · Grades Pre-K–9

Largest group: 27% of students

Germantown, MD

B+Overall grade143 students10 students per teacher

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#4 Most Diverse Private Schools in Montgomery County, MD

St. Marys Elementary School

Diocesan school · Grades Pre-K–8

Largest group: 28% of students

Rockville, MD

A+Overall grade148 students10 students per teacher

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#5 Most Diverse Private Schools in Montgomery County, MD

St. Andrew Apostle School

Parish school · Grades Pre-K–8

Largest group: 31% of students

Silver Spring, MD

A+Overall grade306 students12 students per teacher

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#6 Most Diverse Private Schools in Montgomery County, MD

Fellowship Christian School

Christian school (nondenominational) · Grades K–5

Largest group: 31% of students

Germantown, MD

B+Overall grade121 students11 students per teacher

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#7 Most Diverse Private Schools in Montgomery County, MD

St. John the Baptist School

Parish school · Grades Pre-K–8

Largest group: 32% of students

Silver Spring, MD

A+Overall grade233 students12 students per teacher

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#8 Most Diverse Private Schools in Montgomery County, MD

Washington Christian Academy

Christian school (nondenominational) · Grades K–12

Largest group: 33% of students

Olney, MD

A+Overall grade289 students10 students per teacher

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#9 Most Diverse Private Schools in Montgomery County, MD

Mother of God School

Independent Catholic school · Grades Pre-K–8

Largest group: 33% of students

Gaithersburg, MD

A+Overall grade198 students13 students per teacher

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#10 Most Diverse Private Schools in Montgomery County, MD

Olney Adventist Preparatory

Seventh-day Adventist school · Grades K–8

Largest group: 34% of students

Olney, MD

AOverall grade93 students10 students per teacher

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#11 Most Diverse Private Schools in Montgomery County, MD

Muslim Community School/Alim Academy

Islamic school · Grades Pre-K–11

Largest group: 35% of students

Potomac, MD

AOverall grade129 students7 students per teacher

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#12 Most Diverse Private Schools in Montgomery County, MD

Olney Adventist Preparatory School

Seventh-day Adventist school · Grades K–8

Largest group: 35% of students

Olney, MD

B+Overall grade92 students10 students per teacher

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#13 Most Diverse Private Schools in Montgomery County, MD

Griggs International Academy

Seventh-day Adventist school · Grades K–12

Largest group: 37% of students

Silver Spring, MD

BOverall grade826 students

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#14 Most Diverse Private Schools in Montgomery County, MD

Holy Cross Elementary School

Diocesan school · Grades Pre-K–8

Largest group: 38% of students

Garrett Park, MD

BOverall grade233 students15 students per teacher

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#15 Most Diverse Private Schools in Montgomery County, MD

St. John's Episcopal School

Episcopal school · Grades Pre-K–8

Largest group: 39% of students

Olney, MD

A+Overall grade154 students9 students per teacher

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#16 Most Diverse Private Schools in Montgomery County, MD

St. Francis International School

Diocesan school · Grades Pre-K–8

Largest group: 41% of students

Silver Spring, MD

B+Overall grade203 students16 students per teacher

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#18 Most Diverse Private Schools in Montgomery County, MD

Seneca Academy

Independent school · Grades Pre-K–5

Largest group: 41% of students

Darnestown, MD

A+Overall grade58 students6 students per teacher

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#19 Most Diverse Private Schools in Montgomery County, MD

Barrie School

Montessori school · Grades Pre-K–12

Largest group: 43% of students

Silver Spring, MD

A+Overall grade252 students4 students per teacher

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#20 Most Diverse Private Schools in Montgomery County, MD

Our Lady of Mercy School

Diocesan school · Grades Pre-K–8

Largest group: 43% of students

Potomac, MD

A+Overall grade182 students8 students per teacher

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#21 Most Diverse Private Schools in Montgomery County, MD

Grace Episcopal Day School

Episcopal school · Grades Pre-K–5

Largest group: 43% of students

Kensington, MD

A+Overall grade84 students7 students per teacher

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#22 Most Diverse Private Schools in Montgomery County, MD

St. John the Evangelist School

Diocesan school · Grades Pre-K–8

Largest group: 44% of students

Silver Spring, MD

A+Overall grade178 students7 students per teacher

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#23 Most Diverse Private Schools in Montgomery County, MD

Academy of the Holy Cross

Independent Catholic school · Grades 9–12

Largest group: 45% of students

Kensington, MD

A+Overall gradeAll girls371 students9 students per teacher

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#24 Most Diverse Private Schools in Montgomery County, MD

Mater Amoris Montessori School

Montessori school · Grades Pre-K–8

Largest group: 45% of students

Ashton, MD

B+Overall grade97 students10 students per teacher

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From official public records, updated October 2026.

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