#1 Most Diverse Private Schools in San Luis Obispo County, CA
Valley View Adventist Junior Academy
Seventh-day Adventist school · Grades K–8
Largest group: 29% of students
Arroyo Grande, CA
A+Overall grade55 students10 students per teacher
2026 lists
Most Diverse Private Schools in San Luis Obispo County, CA
Private schools in San Luis Obispo County, CA with the most varied mix of students. Top 12 of 12 schools.
#2 Most Diverse Private Schools in San Luis Obispo County, CA
Mission College Prep Catholic High School
Diocesan school · Grades 9–12
Largest group: 48% of students
San Luis Obispo, CA
A+Overall grade330 students11 students per teacher
#3 Most Diverse Private Schools in San Luis Obispo County, CA
St. Patricks Catholic School
Parish school · Grades Pre-K–8
Largest group: 65% of students
Arroyo Grande, CA
B+Overall grade247 students20 students per teacher
#4 Most Diverse Private Schools in San Luis Obispo County, CA
Old Mission School
Parish school · Grades K–8
Largest group: 66% of students
San Luis Obispo, CA
A+Overall grade294 students14 students per teacher
#5 Most Diverse Private Schools in San Luis Obispo County, CA
North County Christian School
Christian school (nondenominational) · Grades Pre-K–8
Largest group: 66% of students
Atascadero, CA
AOverall grade106 students10 students per teacher
#6 Most Diverse Private Schools in San Luis Obispo County, CA
Trinity Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Largest group: 82% of students
Paso Robles, CA
B-Overall grade170 students16 students per teacher
#7 Most Diverse Private Schools in San Luis Obispo County, CA
San Luis Obispo Classical Academy
Independent school · Grades Pre-K–12
Largest group: 83% of students
San Luis Obispo, CA
BOverall grade337 students16 students per teacher
#8 Most Diverse Private Schools in San Luis Obispo County, CA
Wishing Well School
Independent school · Grades Pre-K–8
Largest group: 84% of students
Los Osos, CA
BOverall grade128 students9 students per teacher
#9 Most Diverse Private Schools in San Luis Obispo County, CA
Montessori Childrens School
Montessori school · Grades Pre-K–6
Largest group: 86% of students
San Luis Obispo, CA
B+Overall grade58 students12 students per teacher
#10 Most Diverse Private Schools in San Luis Obispo County, CA
Coastal Christian School
Christian school (nondenominational) · Grades K–12
Largest group: 89% of students
Pismo Beach, CA
B-Overall grade409 students15 students per teacher
#11 Most Diverse Private Schools in San Luis Obispo County, CA
St. Rose Catholic School
Diocesan school · Grades Pre-K–8
Largest group: 89% of students
Paso Robles, CA
BOverall grade220 students18 students per teacher
#12 Most Diverse Private Schools in San Luis Obispo County, CA
Childrens House Montessori School
Montessori school · Grades Pre-K–6
Largest group: 91% of students
Atascadero, CA
B+Overall grade70 students10 students per teacher
From official public records, updated October 2026.