For the 2026 school year, there are 3 public charter schools serving 348 students in Napa County, CA.
The top-ranked public charter school in Napa County, CA is Stone Bridge. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Napa County, CA public charter schools have an average math proficiency score of 32% (versus the California public charter school average of 32%), and reading proficiency score of 57% (versus the 48% statewide average). Charter schools in Napa County have an average ranking of 8/10, which is in the top 30% of California public charter schools.
Minority enrollment is 46% of the student body (majority Hispanic), which is less than the California public charter school average of 75% (majority Hispanic).
Best Public Charter Schools in Napa County (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Stone Bridge
Charter School
(Math: 30-34% | Reading: 55-59%)
Rank:
Rank:
7/
Top 50%10
1019 2nd Ave.
Napa, CA 94558
(707) 252-5522
Napa, CA 94558
(707) 252-5522
Gr: K-8 | 278 students Student-teacher ratio: 28:1 Minority enrollment: 38%
Rank: n/an/a
Mayacamas Charter Middle School
Charter School
983 Napa St.
Napa, CA 94558
(415) 515-4226
Napa, CA 94558
(415) 515-4226
Gr: 6-8
Rank: n/an/a
Mayacamas Countywide Middle School
Charter School
983 Napa St.
Napa, CA 94559
(707) 320-6394
Napa, CA 94559
(707) 320-6394
Gr: 6-8 | 127 students Student-teacher ratio: 21:1 Minority enrollment: 66%
Frequently Asked Questions
What are the top-ranked public charter schools in Napa County, CA?
The top-ranked public charter schools in Napa County, CA include Stone Bridge.
How many public charter schools are located in Napa County?
2 public charter schools are located in Napa County.
What is the racial composition of students in Napa County?
Napa County public charter schools minority enrollment is 46% of the student body (majority Hispanic), which is less than the California public charter schools average of 75% (majority Hispanic).
Recent Articles
When “Free Public School” Still Isn’t Free
Discover the hidden costs of public school in 2026, from supplies and fees to transportation, technology, and extracurricular expenses.
What a District Budget Cut Means for Your Child's School Experience
Learn how district budget cuts can affect class sizes, programs, staffing, transportation, and your child's daily school experience in 2026.
School Closure Risk: What Parents Should Check Before Moving
Learn how parents can assess school closure risk before buying or renting in a district, using enrollment, funding, and boundary data.