#1 Best Private Schools in Sonoma County, CA
St. Vincent De Paul High School
Parish school · Grades 9–12
Smaller classes than 81% of Catholic schools in California
Petaluma, CA
A+Overall grade169 students9 students per teacher
2026 lists
Best Private Schools in Sonoma County, CA
Private schools in Sonoma County, CA with the highest overall grades. Top 21 of 21 schools.
#2 Best Private Schools in Sonoma County, CA
Rio Lindo Adventist Academy
Seventh-day Adventist school · Grades 9–12
The only Christian school in Healdsburg
Healdsburg, CA
A+Overall grade113 students7 students per teacher
#3 Best Private Schools in Sonoma County, CA
The Spring Hill School
Independent school · Grades Pre-K–8
The only independent school in Petaluma
Petaluma, CA
A+Overall grade109 students5 students per teacher
#4 Best Private Schools in Sonoma County, CA
The Presentation School
Independent Catholic school · Grades K–8
Smaller classes than 97% of Catholic schools in California
Sonoma, CA
A+Overall grade158 students8 students per teacher
#5 Best Private Schools in Sonoma County, CA
Cardinal Newman High School
Diocesan school · Grades 9–12
The smallest classes of any Catholic school in Santa Rosa
Santa Rosa, CA
A+Overall grade550 students11 students per teacher
#6 Best Private Schools in Sonoma County, CA
Sonoma Country Day School
Independent school · Grades Pre-K–8
Smaller classes than 61% of independent schools in California
Santa Rosa, CA
A+Overall grade280 students7 students per teacher
#7 Best Private Schools in Sonoma County, CA
St. Francis Solano School
Parish school · Grades K–8
Smaller classes than 74% of Catholic schools in California
Sonoma, CA
A+Overall grade192 students13 students per teacher
#8 Best Private Schools in Sonoma County, CA
Redwood Adventist Academy
Seventh-day Adventist school · Grades K–8
Serving families in Santa Rosa since at least 2011
Santa Rosa, CA
AOverall grade98 students14 students per teacher
#9 Best Private Schools in Sonoma County, CA
St. Vincent De Paul Elementary School
Parish school · Grades K–8
Serving families in Petaluma since at least 2011
Petaluma, CA
B+Overall grade192 students18 students per teacher
#10 Best Private Schools in Sonoma County, CA
Pleasant Hill Christian School
Christian school (nondenominational) · Grades K–6
The only Christian school in Sebastopol
Sebastopol, CA
B+Overall grade71 students10 students per teacher
#11 Best Private Schools in Sonoma County, CA
St. Eugene's Cathedral School
Independent Catholic school · Grades K–8
Serving families in Santa Rosa since at least 2011
Santa Rosa, CA
B+Overall grade87 students17 students per teacher
#12 Best Private Schools in Sonoma County, CA
The Healdsburg School
Independent school · Grades K–8
The only independent school in Healdsburg
Healdsburg, CA
B+Overall grade234 students8 students per teacher
#13 Best Private Schools in Sonoma County, CA
Quest Forward High School
Independent school · Grades 9–12
The smallest classes of any independent school in Santa Rosa
Santa Rosa, CA
B+Overall grade62 students7 students per teacher
#14 Best Private Schools in Sonoma County, CA
Victory Christian Academy
Christian school (nondenominational) · Grades K–12
The smallest classes of any Christian school in Santa Rosa
Santa Rosa, CA
B+Overall grade175 students12 students per teacher
#15 Best Private Schools in Sonoma County, CA
St. Rose Elementary School
Parish school · Grades Pre-K–8
Serving families in Santa Rosa since at least 2011
Santa Rosa, CA
BOverall grade305 students22 students per teacher
#16 Best Private Schools in Sonoma County, CA
Sonoma Academy
Independent school · Grades 9–12
The largest independent school in Santa Rosa
Santa Rosa, CA
BOverall grade340 students
#17 Best Private Schools in Sonoma County, CA
Harvest Christian School
Christian school (nondenominational) · Grades Pre-K–8
The only Christian school in Petaluma
Petaluma, CA
BOverall grade172 students15 students per teacher
#18 Best Private Schools in Sonoma County, CA
College Oak Montessori School
Montessori school · Ungraded
The only Montessori school in Santa Rosa
Santa Rosa, CA
BOverall grade62 students31 students per teacher
#19 Best Private Schools in Sonoma County, CA
Summerfield Waldorf School and Farm
Independent school · Grades Pre-K–12
Serving families in Santa Rosa since at least 2011
Santa Rosa, CA
BOverall grade225 students9 students per teacher
#20 Best Private Schools in Sonoma County, CA
St. John the Baptist Catholic School
Diocesan school · Grades K–8
The only Catholic school in Healdsburg
Healdsburg, CA
BOverall grade293 students22 students per teacher
#21 Best Private Schools in Sonoma County, CA
Grace Christian Academy
Christian school (nondenominational) · Grades K–12
The largest Christian school in Santa Rosa
Santa Rosa, CA
B-Overall grade189 students14 students per teacher
Grades compare each school's official facts, such as class size, how long it has served families and where graduates go, with similar schools. They're a starting point: visit, ask questions and trust what you see.