#1 Largest Private Schools in Arlington, VA
Bishop Denis J. Oconnell High School
Diocesan school · Grades 9–12
1,155 students
Arlington, VA
A+Overall grade1,155 students10 students per teacher
2026 lists
Largest Private Schools in Arlington, VA
The private schools in Arlington, VA with the most students. Top 10 of 10 schools.
#2 Largest Private Schools in Arlington, VA
St. Thomas More Cathedral School
Diocesan school · Grades Pre-K–8
440 students
Arlington, VA
BOverall grade440 students15 students per teacher
#3 Largest Private Schools in Arlington, VA
St. Agnes School
Diocesan school · Grades Pre-K–8
417 students
Arlington, VA
B+Overall grade417 students12 students per teacher
#4 Largest Private Schools in Arlington, VA
St. Ann Catholic School
Parish school · Grades Pre-K–8
222 students
Arlington, VA
A+Overall grade222 students7 students per teacher
#5 Largest Private Schools in Arlington, VA
Our Savior Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
159 students
Arlington, VA
BOverall grade159 students16 students per teacher
#6 Largest Private Schools in Arlington, VA
Rivendell School
Religious school · Grades K–8
147 students
Arlington, VA
B+Overall grade147 students12 students per teacher
#7 Largest Private Schools in Arlington, VA
Veritas Collegiate Academy
Christian school (nondenominational) · Grades K–12
127 students
Arlington, VA
A+Overall grade127 students7 students per teacher
#8 Largest Private Schools in Arlington, VA
Full Circle Montessori School
Montessori school · Ungraded
118 students
Arlington, VA
BOverall grade118 students39 students per teacher
#9 Largest Private Schools in Arlington, VA
The Village School: An Acton Academy
Alternative school · Grades K–8
74 students
Arlington, VA
BOverall grade74 students8 students per teacher
#10 Largest Private Schools in Arlington, VA
The Sycamore School
Alternative school · Grades 5–12
65 students
Arlington, VA
AOverall grade65 students4 students per teacher
From official public records, updated October 2026.