For the 2026-27 school year, there are 6 public charter schools serving 3,695 students in 95330, CA.
The top-ranked public charter schools in 95330, CA are River Islands Technology Academy Ii, Nextgeneration Steam Academy and Delta Charter Online. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Public charter schools in zipcode 95330 have an average math proficiency score of 43% (versus the California public charter school average of 32%), and reading proficiency score of 56% (versus the 48% statewide average). Charter schools in 95330, CA have an average ranking of 8/10, which is in the top 30% of California public charter schools.
Minority enrollment is 90% of the student body (majority Asian), which is more than the California public charter school average of 75% (majority Hispanic).
Best 95330, CA Public Charter Schools (2026-27)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
River Islands Technology Academy Ii
Charter School
(Math: 51% | Reading: 65%)
Rank:
Rank:
9/
Top 20%10
1175 Marina Dr.
Lathrop, CA 95330
(209) 229-4700
Lathrop, CA 95330
(209) 229-4700
Gr: K-8 | 954 students Student-teacher ratio: 24:1 Minority enrollment: 88%
Rank: #22.
Nextgeneration Steam Academy
Charter School
(Math: 39% | Reading: 51%)
Rank:
Rank:
7/
Top 50%10
18001 Commercial St.
Lathrop, CA 95330
(209) 229-4736
Lathrop, CA 95330
(209) 229-4736
Gr: K-8 | 797 students Student-teacher ratio: 23:1 Minority enrollment: 91%
Rank: #33.
Delta Charter Online
Charter School
(Math: 10-14% | Reading: 35-39%)
Rank:
Rank:
3/
Bottom 50%10
31400 South Koster Rd.
Lathrop, CA 95330
(209) 830-6363
Lathrop, CA 95330
(209) 830-6363
Gr: K-12 | 282 students Student-teacher ratio: 24:1 Minority enrollment: 74%
Rank: #44.
Delta Keys Charter
Charter School
(Math: ≤10% | Reading: 11-19%)
Rank:
Rank:
1/
Bottom 50%10
31400 South Koster Rd.
Lathrop, CA 95330
(209) 830-6363
Lathrop, CA 95330
(209) 830-6363
Gr: K-12 | 125 students Student-teacher ratio: 18:1 Minority enrollment: 86%
Rank: n/an/a
Epic Academy
Charter School
2760 Penrose Ln.
Lathrop, CA 95330
(209) 717-6700
Lathrop, CA 95330
(209) 717-6700
Gr: K-8 | 1,025 students Student-teacher ratio: 26:1 Minority enrollment: 96%
Rank: n/an/a
River Islands High School
Charter School
16601 Riptide Way
Lathrop, CA 95330
(209) 717-6715
Lathrop, CA 95330
(209) 717-6715
Gr: 9-12 | 512 students Student-teacher ratio: 18:1 Minority enrollment: 92%
Frequently Asked Questions
What are the top-ranked public charter schools in 95330, CA?
The top-ranked public charter schools in 95330, CA include River Islands Technology Academy Ii, Nextgeneration Steam Academy and Delta Charter Online.
How many public charter schools are located in 95330?
6 public charter schools are located in 95330.
What is the racial composition of students in 95330?
95330 public charter schools minority enrollment is 90% of the student body (majority Asian), which is more than the California public charter schools average of 75% (majority Hispanic).
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