#1 Largest Private Schools in Fairfax County, VA
The Keystone School
Independent school · Grades K–12
8,873 students
Reston, VA
B-Overall grade8,873 students
2026 lists
Largest Private Schools in Fairfax County, VA
The private schools in Fairfax County, VA with the most students. Top 50 of 90 schools.
#2 Largest Private Schools in Fairfax County, VA
King Abdullah Academy
Independent school · Grades K–12
913 students
Herndon, VA
B+Overall grade913 students6 students per teacher
#3 Largest Private Schools in Fairfax County, VA
Trinity Christian School of Fairfax
Christian school (nondenominational) · Grades K–12
757 students
Fairfax, VA
A+Overall grade757 students11 students per teacher
#4 Largest Private Schools in Fairfax County, VA
St. Timothy Catholic School
Diocesan school · Grades Pre-K–8
637 students
Chantilly, VA
B-Overall grade637 students19 students per teacher
#5 Largest Private Schools in Fairfax County, VA
Immanuel Christian School
Christian school (nondenominational) · Grades K–12
611 students
Springfield, VA
B+Overall grade611 students9 students per teacher
#6 Largest Private Schools in Fairfax County, VA
Nysmith School for the Gifted
Independent school · Grades Pre-K–8
551 students
Herndon, VA
A+Overall grade551 students5 students per teacher
#7 Largest Private Schools in Fairfax County, VA
St. Joseph Catholic School
Diocesan school · Grades K–8
519 students
Herndon, VA
BOverall grade519 students18 students per teacher
#8 Largest Private Schools in Fairfax County, VA
Our Lady of Good Counsel School
Diocesan school · Grades Pre-K–8
470 students
Vienna, VA
B+Overall grade470 students16 students per teacher
#9 Largest Private Schools in Fairfax County, VA
St. Louis Catholic School
Parish school · Grades Pre-K–8
468 students
Alexandria, VA
BOverall grade468 students16 students per teacher
#10 Largest Private Schools in Fairfax County, VA
The Langley School
Independent school · Grades Pre-K–8
461 students
McLean, VA
A+Overall grade461 students6 students per teacher
#11 Largest Private Schools in Fairfax County, VA
St. Bernadette School
Parish school · Grades Pre-K–8
439 students
Springfield, VA
A+Overall grade439 students12 students per teacher
#12 Largest Private Schools in Fairfax County, VA
Holy Spirit School
Parish school · Grades Pre-K–8
426 students
Annandale, VA
B+Overall grade426 students14 students per teacher
#13 Largest Private Schools in Fairfax County, VA
St. Veronica Catholic School
Diocesan school · Grades Pre-K–8
369 students
Chantilly, VA
AOverall grade369 students14 students per teacher
#14 Largest Private Schools in Fairfax County, VA
St. Mark Catholic School
Diocesan school · Grades Pre-K–8
356 students
Vienna, VA
A+Overall grade356 students6 students per teacher
#15 Largest Private Schools in Fairfax County, VA
St. Leo the Great Catholic School
Diocesan school · Grades Pre-K–8
352 students
Fairfax, VA
AOverall grade352 students13 students per teacher
#16 Largest Private Schools in Fairfax County, VA
The Madeira School
Independent school · Grades 9–12
335 students
McLean, VA
B+Overall gradeAll girls335 students10 students per teacher
#17 Largest Private Schools in Fairfax County, VA
Dominion Christian School
Christian school (nondenominational) · Grades K–12
333 students
Herndon, VA
BOverall grade333 students8 students per teacher
#18 Largest Private Schools in Fairfax County, VA
Dominion Christian School
Christian school (nondenominational) · Grades K–12
333 students
Oakton, VA
BOverall grade333 students10 students per teacher
#19 Largest Private Schools in Fairfax County, VA
Congressional School
Independent school · Grades Pre-K–8
329 students
Falls Church, VA
BOverall grade329 students9 students per teacher
#20 Largest Private Schools in Fairfax County, VA
Fairfax Baptist Temple Academy
Baptist school · Grades Pre-K–12
326 students
Fairfax Station, VA
A-Overall grade326 students13 students per teacher
#21 Largest Private Schools in Fairfax County, VA
Academy of Christian Education
Christian school (nondenominational) · Grades Pre-K–9
275 students
Reston, VA
A+Overall grade275 students8 students per teacher
#22 Largest Private Schools in Fairfax County, VA
Nativity Catholic School
Diocesan school · Grades Pre-K–8
264 students
Burke, VA
A-Overall grade264 students15 students per teacher
#23 Largest Private Schools in Fairfax County, VA
Calvary Road Christian School
Baptist school · Grades Pre-K–6
245 students
Alexandria, VA
B+Overall grade245 students16 students per teacher
#24 Largest Private Schools in Fairfax County, VA
St. John the Beloved Academy
Diocesan school · Grades Pre-K–8
245 students
McLean, VA
A+Overall grade245 students8 students per teacher
From official public records, updated October 2026.