#1 Most Diverse Private Schools in Alameda County, CA
Redwood Christian Elementary School
Christian school (nondenominational) · Grades K–5
Largest group: 25% of students
Castro Valley, CA
BOverall grade268 students16 students per teacher
2026 lists
Most Diverse Private Schools in Alameda County, CA
Private schools in Alameda County, CA with the most varied mix of students. Top 50 of 76 schools.
#2 Most Diverse Private Schools in Alameda County, CA
St. Joseph Notre Dame High School
Diocesan school · Grades 8–12
Largest group: 26% of students
Alameda, CA
A+Overall grade395 students13 students per teacher
#3 Most Diverse Private Schools in Alameda County, CA
Summa Academy
Special education school · Grades 1–8
Largest group: 26% of students
Pleasanton, CA
B+Overall grade58 students7 students per teacher
#4 Most Diverse Private Schools in Alameda County, CA
Redwood Christian Middle School and High School
Christian school (nondenominational) · Grades 6–12
Largest group: 27% of students
San Lorenzo, CA
A-Overall grade394 students16 students per teacher
#5 Most Diverse Private Schools in Alameda County, CA
St. Joseph Elementary School
Diocesan school · Grades Pre-K–8
Largest group: 30% of students
Alameda, CA
A+Overall grade313 students13 students per teacher
#6 Most Diverse Private Schools in Alameda County, CA
School of the Madeleine
Parish school · Grades K–8
Largest group: 31% of students
Berkeley, CA
A+Overall grade255 students9 students per teacher
#7 Most Diverse Private Schools in Alameda County, CA
Head Royce School
Independent school · Grades K–12
Largest group: 32% of students
Oakland, CA
A+Overall grade906 students11 students per teacher
#8 Most Diverse Private Schools in Alameda County, CA
Escuela Bilingue International
Independent school · Grades Pre-K–8
Largest group: 33% of students
Emeryville, CA
B+Overall grade268 students8 students per teacher
#9 Most Diverse Private Schools in Alameda County, CA
Valley Montessori School
Montessori school · Grades Pre-K–8
Largest group: 35% of students
Livermore, CA
A+Overall grade232 students6 students per teacher
#10 Most Diverse Private Schools in Alameda County, CA
Holy Names High School
Independent Catholic school · Grades 9–12
Largest group: 36% of students
Oakland, CA
A+Overall gradeAll girls121 students6 students per teacher
#11 Most Diverse Private Schools in Alameda County, CA
St. Edward Elementary School
Diocesan school · Grades K–8
Largest group: 37% of students
Newark, CA
A+Overall grade226 students17 students per teacher
#12 Most Diverse Private Schools in Alameda County, CA
The College Preparatory School
Independent school · Grades 9–12
Largest group: 38% of students
Oakland, CA
A+Overall grade367 students8 students per teacher
#13 Most Diverse Private Schools in Alameda County, CA
Assumption School
Diocesan school · Grades K–8
Largest group: 38% of students
San Leandro, CA
A+Overall grade247 students14 students per teacher
#14 Most Diverse Private Schools in Alameda County, CA
Our Lady of Grace Catholic School
Diocesan school · Grades K–8
Largest group: 38% of students
Castro Valley, CA
A+Overall grade166 students10 students per teacher
#15 Most Diverse Private Schools in Alameda County, CA
St. Clement Catholic School
Diocesan school · Grades K–8
Largest group: 39% of students
Hayward, CA
BOverall grade256 students20 students per teacher
#16 Most Diverse Private Schools in Alameda County, CA
St. Theresa School
Diocesan school · Grades K–8
Largest group: 39% of students
Oakland, CA
A+Overall grade197 students12 students per teacher
#17 Most Diverse Private Schools in Alameda County, CA
Our Savior Lutheran
Lutheran (Missouri Synod) school · Grades K–8
Largest group: 40% of students
Livermore, CA
A+Overall grade397 students10 students per teacher
#18 Most Diverse Private Schools in Alameda County, CA
Moreau Catholic High School
Parish school · Grades 9–12
Largest group: 41% of students
Hayward, CA
A+Overall grade793 students13 students per teacher
#19 Most Diverse Private Schools in Alameda County, CA
St. Mary's College High School
Independent Catholic school · Grades 9–12
Largest group: 41% of students
Berkeley, CA
BOverall grade627 students19 students per teacher
#20 Most Diverse Private Schools in Alameda County, CA
Escuela Bilingue Internacional
Independent school · Grades Pre-K–8
Largest group: 41% of students
Emeryville, CA
A+Overall grade268 students6 students per teacher
#21 Most Diverse Private Schools in Alameda County, CA
The Phillips Academy
Special education school · Grades 6–12
Largest group: 41% of students
Alameda, CA
B+Overall grade59 students7 students per teacher
#22 Most Diverse Private Schools in Alameda County, CA
Valley Christian Schools
Christian school (nondenominational) · Grades Pre-K–12
Largest group: 42% of students
Dublin, CA
A+Overall grade400 students10 students per teacher
#23 Most Diverse Private Schools in Alameda County, CA
St. Pauls Episcopal School
Episcopal school · Grades K–8
Largest group: 42% of students
Oakland, CA
A+Overall grade351 students9 students per teacher
#24 Most Diverse Private Schools in Alameda County, CA
St. Paul's Day School
Episcopal school · Grades K–8
Largest group: 42% of students
Oakland, CA
A+Overall grade349 students9 students per teacher
From official public records, updated October 2026.