For the 2026 school year, there are 5 public charter schools serving 1,211 students in Costa Mesa, CA.
The top-ranked public charter schools in Costa Mesa, CA are International School For Science And Culture, California Pacific Charter - Sonoma and California Pacific Charter - San Diego. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Costa Mesa, CA public charter schools have an average math proficiency score of 25% (versus the California public charter school average of 32%), and reading proficiency score of 45% (versus the 48% statewide average). Charter schools in Costa Mesa have an average ranking of 4/10, which is in the bottom 50% of California public charter schools.
Minority enrollment is 75% of the student body (majority Hispanic), which is equal to the California public charter school average of 75% (majority Hispanic).
Best Public Charter Schools in Costa Mesa, CA (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
International School For Science And Culture
Charter School
(Math: 50-59% | Reading: 50-54%)
Rank:
Rank:
8/
Top 30%10
1770 Tustin Ave.
Costa Mesa, CA 92627
(949) 441-4500
Costa Mesa, CA 92627
(949) 441-4500
Gr: K-8 | 97 students Student-teacher ratio: 19:1 Minority enrollment: 80%
Rank: #22.
California Pacific Charter - Sonoma
Charter School
(Math: 25-29% | Reading: 50-54%)
Rank:
Rank:
6/
Top 50%10
14630 Armstrong Woods Rd.
Costa Mesa, CA 92626
(855) 225-7227
Costa Mesa, CA 92626
(855) 225-7227
Gr: K-12 | 213 students Student-teacher ratio: 5:1 Minority enrollment: 66%
Rank: #33.
California Pacific Charter - San Diego
Charter School
(Math: 20-24% | Reading: 50-54%)
Rank:
Rank:
6/
Top 50%10
940 South Coast Dr., Ste. 185
Costa Mesa, CA 92626
(855) 225-7227
Costa Mesa, CA 92626
(855) 225-7227
Gr: K-12 | 310 students Student-teacher ratio: 8:1 Minority enrollment: 71%
Rank: #44.
California Pacific Charter- Los Angeles
Charter School
(Math: 20-24% | Reading: 35-39%)
Rank:
Rank:
4/
Bottom 50%10
940 South Coast Dr. #185
Costa Mesa, CA 92626
(855) 225-7227
Costa Mesa, CA 92626
(855) 225-7227
Gr: K-12 | 423 students Student-teacher ratio: 11:1 Minority enrollment: 74%
Rank: #55.
College And Career Preparatory Academy
Charter School
(Math: ≤10% | Reading: ≤20%)
Rank:
Rank:
1/
Bottom 50%10
15872 South Harbor Blvd. Bldg
Costa Mesa, CA 92628
(714) 796-8795
Costa Mesa, CA 92628
(714) 796-8795
Gr: 9-12 | 168 students Student-teacher ratio: 24:1 Minority enrollment: 92%
Frequently Asked Questions
What are the top-ranked public charter schools in Costa Mesa, CA?
The top-ranked public charter schools in Costa Mesa, CA include International School For Science And Culture, California Pacific Charter - Sonoma and California Pacific Charter - San Diego.
How many public charter schools are located in Costa Mesa?
5 public charter schools are located in Costa Mesa.
What is the racial composition of students in Costa Mesa?
Costa Mesa public charter schools minority enrollment is 75% of the student body (majority Hispanic), which is equal to the California public charter schools average of 75% (majority Hispanic).
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