#1 Most Diverse Private Schools in District of Columbia County, DC
Aidan Montessori School
Montessori school · Grades Pre-K–6
Largest group: 25% of students
Washington, DC
AOverall grade75 students8 students per teacher
2026 lists
Most Diverse Private Schools in District of Columbia County, DC
Private schools in District of Columbia County, DC with the most varied mix of students. Top 39 of 39 schools.
#2 Most Diverse Private Schools in District of Columbia County, DC
Sidwell Friends School
Quaker (Friends) school · Grades Pre-K–12
Largest group: 39% of students
Washington, DC
A+Overall grade1,123 students9 students per teacher
#3 Most Diverse Private Schools in District of Columbia County, DC
Sidwell Friends School
Quaker (Friends) school · Grades Pre-K–12
Largest group: 40% of students
Washingon, DC
A+Overall grade1,122 students8 students per teacher
#4 Most Diverse Private Schools in District of Columbia County, DC
St. Johns College High School
Independent Catholic school · Grades 9–12
Largest group: 43% of students
Washington, DC
B+Overall grade1,794 students20 students per teacher
#5 Most Diverse Private Schools in District of Columbia County, DC
Sidwell Friends School
Quaker (Friends) school · Grades Pre-K–12
Largest group: 43% of students
Washington, DC
A+Overall grade1,129 students8 students per teacher
#6 Most Diverse Private Schools in District of Columbia County, DC
Templeton Academy
Alternative school · Grades 6–12
Largest group: 43% of students
Washington, DC
A-Overall grade79 students9 students per teacher
#7 Most Diverse Private Schools in District of Columbia County, DC
Washington International School
Independent school · Grades Pre-K–12
Largest group: 44% of students
Washington, DC
A+Overall grade846 students7 students per teacher
#8 Most Diverse Private Schools in District of Columbia County, DC
National Cathedral School
Episcopal school · Grades 4–12
Largest group: 47% of students
Washington, DC
A+Overall gradeAll girls597 students8 students per teacher
#9 Most Diverse Private Schools in District of Columbia County, DC
Edmund Burke School
Independent school · Grades 6–12
Largest group: 56% of students
Washington, DC
A+Overall grade315 students8 students per teacher
#10 Most Diverse Private Schools in District of Columbia County, DC
Lowell School
Independent school · Grades Pre-K–8
Largest group: 56% of students
Washington, DC
A+Overall grade270 students4 students per teacher
#11 Most Diverse Private Schools in District of Columbia County, DC
Sheridan School
Independent school · Grades K–8
Largest group: 56% of students
Washington, DC
A+Overall grade221 students7 students per teacher
#12 Most Diverse Private Schools in District of Columbia County, DC
St. Anselm's Abbey School
Diocesan school · Grades 6–12
Largest group: 57% of students
Washington, DC
A+Overall gradeAll boys224 students6 students per teacher
#13 Most Diverse Private Schools in District of Columbia County, DC
Parkmont School
Independent school · Grades 6–12
Largest group: 57% of students
Washington, DC
AOverall grade70 students6 students per teacher
#14 Most Diverse Private Schools in District of Columbia County, DC
Christian Family Montessori
Christian (nondenominational) · Montessori · Grades Pre-K–6
Largest group: 58% of students
Washington, DC
B+Overall grade67 students12 students per teacher
#15 Most Diverse Private Schools in District of Columbia County, DC
Capitol Hill Day School
Independent school · Grades Pre-K–8
Largest group: 59% of students
Washington, DC
A+Overall grade221 students4 students per teacher
#16 Most Diverse Private Schools in District of Columbia County, DC
Our Lady of Victory School
Diocesan school · Grades Pre-K–8
Largest group: 60% of students
Washington, DC
BOverall grade186 students12 students per teacher
#17 Most Diverse Private Schools in District of Columbia County, DC
Model Secondary School for the Deaf
Special education school · Grades 9–12
Largest group: 60% of students
Washington, DC
A+Overall grade101 students1 students per teacher
#18 Most Diverse Private Schools in District of Columbia County, DC
Georgetown Visitation Preparatory School
Independent Catholic school · Grades 9–12
Largest group: 62% of students
Washington, DC
A+Overall gradeAll girls512 students11 students per teacher
#19 Most Diverse Private Schools in District of Columbia County, DC
St. Jerome Institute
Independent Catholic school · Grades 9–12
Largest group: 62% of students
Washington, DC
AOverall grade61 students9 students per teacher
#20 Most Diverse Private Schools in District of Columbia County, DC
St. Anthony Catholic School
Parish school · Grades K–8
Largest group: 63% of students
Washington, DC
A+Overall grade195 students6 students per teacher
#21 Most Diverse Private Schools in District of Columbia County, DC
River School
Special education school · Grades Pre-K–5
Largest group: 63% of students
Washington, DC
AOverall grade134 students5 students per teacher
#22 Most Diverse Private Schools in District of Columbia County, DC
St. Patrick's Episcopal Day School
Episcopal school · Grades Pre-K–8
Largest group: 64% of students
Washington, DC
AOverall grade424 students7 students per teacher
#23 Most Diverse Private Schools in District of Columbia County, DC
St. Peter School
Diocesan school · Grades Pre-K–8
Largest group: 71% of students
Washington, DC
A+Overall grade210 students7 students per teacher
#24 Most Diverse Private Schools in District of Columbia County, DC
Holy Trinity School
Parish school · Grades Pre-K–8
Largest group: 72% of students
Washington, DC
A-Overall grade315 students9 students per teacher
From official public records, updated October 2026.