#1 Best Private Middle 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
2026 lists
Best Private Middle Schools in Sonoma County, CA
Private schools in Sonoma County, CA with middle-school grades and the highest overall grades. Top 14 of 14 schools.
#2 Best Private Middle 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
#3 Best Private Middle 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
#4 Best Private Middle 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
#5 Best Private Middle 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
#6 Best Private Middle 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
#7 Best Private Middle 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
#8 Best Private Middle 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
#9 Best Private Middle 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
#10 Best Private Middle 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
#11 Best Private Middle 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
#12 Best Private Middle 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
#13 Best Private Middle 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
#14 Best Private Middle 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.