#1 Largest Private Schools in San Bernardino County, CA
Ontario Christian School
Christian school (nondenominational) · Grades Pre-K–12
1,438 students
Ontario, CA
B+Overall grade1,438 students17 students per teacher
2026 lists
Largest Private Schools in San Bernardino County, CA
The private schools in San Bernardino County, CA with the most students. Top 50 of 54 schools.
#2 Largest Private Schools in San Bernardino County, CA
Arrowhead Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
1,257 students
Redlands, CA
BOverall grade1,257 students15 students per teacher
#3 Largest Private Schools in San Bernardino County, CA
Redlands Christian School
Christian school (nondenominational) · Grades Pre-K–12
1,250 students
Redlands, CA
B-Overall grade1,250 students14 students per teacher
#4 Largest Private Schools in San Bernardino County, CA
United Christian Academy
Christian school (nondenominational) · Grades K–12
923 students
Rancho Cucamonga, CA
AOverall grade923 students32 students per teacher
#5 Largest Private Schools in San Bernardino County, CA
Heights Christian-Chino Hills
Christian school (nondenominational) · Grades Pre-K–8
914 students
Chino Hills, CA
B+Overall grade914 students15 students per teacher
#6 Largest Private Schools in San Bernardino County, CA
Hesperia Christian School
Christian school (nondenominational) · Grades Pre-K–12
644 students
Hesperia, CA
B-Overall grade644 students18 students per teacher
#7 Largest Private Schools in San Bernardino County, CA
Aquinas High School
Diocesan school · Grades 9–12
626 students
San Bernardino, CA
BOverall grade626 students18 students per teacher
#8 Largest Private Schools in San Bernardino County, CA
Redlands Adventist Academy
Seventh-day Adventist school · Grades K–12
403 students
Redlands, CA
AOverall grade403 students17 students per teacher
#9 Largest Private Schools in San Bernardino County, CA
Victor Valley Christian Schools
Assembly of God school · Grades Pre-K–12
348 students
Victorville, CA
B+Overall grade348 students23 students per teacher
#10 Largest Private Schools in San Bernardino County, CA
Loving Savior of the Hills Lutheran School
Lutheran (Missouri Synod) school · Grades K–8
347 students
Chino Hills, CA
AOverall grade347 students14 students per teacher
#11 Largest Private Schools in San Bernardino County, CA
St. Joseph School
Parish school · Grades K–8
330 students
Upland, CA
BOverall grade330 students
#12 Largest Private Schools in San Bernardino County, CA
Sacred Heart Parish School
Parish school · Grades K–8
329 students
Rancho Cucamonga, CA
BOverall grade329 students21 students per teacher
#13 Largest Private Schools in San Bernardino County, CA
St. George Parish School
Parish school · Grades K–8
316 students
Ontario, CA
BOverall grade316 students22 students per teacher
#14 Largest Private Schools in San Bernardino County, CA
Packinghouse Christian Academy
Christian school (nondenominational) · Grades K–12
310 students
Redlands, CA
BOverall grade310 students17 students per teacher
#15 Largest Private Schools in San Bernardino County, CA
Sacred Heart Academy
Diocesan school · Grades Pre-K–8
266 students
Redlands, CA
A+Overall grade266 students17 students per teacher
#16 Largest Private Schools in San Bernardino County, CA
Water of Life Christian School
Christian school (nondenominational) · Grades K–8
252 students
Fontana, CA
A-Overall grade252 students13 students per teacher
#17 Largest Private Schools in San Bernardino County, CA
The Rock Christian School
Christian school (nondenominational) · Grades K–12
236 students
San Bernardino, CA
BOverall grade236 students16 students per teacher
#18 Largest Private Schools in San Bernardino County, CA
Alta Loma Christian School
Christian school (nondenominational) · Grades Pre-K–8
224 students
Alta Loma, CA
A+Overall grade224 students6 students per teacher
#19 Largest Private Schools in San Bernardino County, CA
Montessori in Redlands
Montessori school · Grades Pre-K–6
197 students
Redlands, CA
B+Overall grade197 students15 students per teacher
#20 Largest Private Schools in San Bernardino County, CA
Port View Preparatory
Special education school · Grades 1–12
163 students
Ontario, CA
B-Overall grade163 students10 students per teacher
#21 Largest Private Schools in San Bernardino County, CA
Calvary Chapel Rialto Christian School
Christian school (nondenominational) · Grades K–10
159 students
Rialto, CA
BOverall grade159 students13 students per teacher
#22 Largest Private Schools in San Bernardino County, CA
Our Lady of the Assumption School
Parish school · Grades Pre-K–8
158 students
San Bernardino, CA
A+Overall grade158 students14 students per teacher
#23 Largest Private Schools in San Bernardino County, CA
St. Peter & St. Paul Catholic School
Diocesan school · Grades Pre-K–8
156 students
Alta Loma, CA
A+Overall grade156 students16 students per teacher
#24 Largest Private Schools in San Bernardino County, CA
Resurrection Academy
Diocesan school · Grades Pre-K–8
152 students
Fontana, CA
A+Overall grade152 students10 students per teacher
From official public records, updated October 2026.