#1 Largest Private Schools in Simi Valley, CA
Grace Elementary School
Christian school (nondenominational) · Grades K–6
419 students
Simi Valley, CA
B+Overall grade419 students17 students per teacher
2026 lists
Largest Private Schools in Simi Valley, CA
The private schools in Simi Valley, CA with the most students. Top 7 of 7 schools.
#2 Largest Private Schools in Simi Valley, CA
St. Rose of Lima Elementary
Diocesan school · Grades K–8
212 students
Simi Valley, CA
AOverall grade212 students17 students per teacher
#3 Largest Private Schools in Simi Valley, CA
Phoenix Ranch School
Independent school · Grades Pre-K–6
151 students
Simi Valley, CA
B+Overall grade151 students10 students per teacher
#4 Largest Private Schools in Simi Valley, CA
Phoenix Ranch West
Independent school · Grades Pre-K–6
140 students
Simi Valley, CA
AOverall grade140 students9 students per teacher
#5 Largest Private Schools in Simi Valley, CA
Good Shepherd Lutheran School
Lutheran (Missouri Synod) school · Grades K–5
46 students
Simi Valley, CA
A+Overall grade46 students7 students per teacher
#6 Largest Private Schools in Simi Valley, CA
St. Peter Claver Preschool & Kindergarten
Diocesan school · Grades Pre-K–K
33 students
Simi Valley, CA
AOverall grade33 students5 students per teacher
#7 Largest Private Schools in Simi Valley, CA
Simi Valley Adventist School
Seventh-day Adventist school · Grades 1–8
21 students
Simi Valley, CA
A-Overall grade21 students10 students per teacher
From official public records, updated October 2026.