#1 Best Independent 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 Independent Schools in Sonoma County, CA
The highest-graded schools of this kind in Sonoma County, CA. Top 6 of 6 schools.
#2 Best Independent 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
#3 Best Independent 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
#4 Best Independent 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
#5 Best Independent 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
#6 Best Independent 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
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.