For the 2026 school year, there are 4 public high schools serving 2,405 students in Lathrop, CA.
The top-ranked public high schools in Lathrop, CA are Lathrop High School, Delta Charter Online and Delta Keys Charter. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Lathrop, CA public high schools have an average math proficiency score of 19% (versus the California public high school average of 28%), and reading proficiency score of 52% (versus the 51% statewide average). High schools in Lathrop have an average ranking of 5/10, which is in the bottom 50% of California public high schools.
Lathrop, CA public high school have a Graduation Rate of 84%, which is less than the California average of 86%.
The school with highest graduation rate is Delta Charter Online, with 90-94% graduation rate. Read more about public school graduation rate statistics in California or national school graduation rate statistics.
Minority enrollment is 89% of the student body (majority Hispanic), which is more than the California public high school average of 79% (majority Hispanic).
Best Public High Schools in Lathrop, CA (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Lathrop High School
(Math: 22% | Reading: 60%)
Rank:
Rank:
6/
Top 50%10
647 Spartan Way
Lathrop, CA 95330
(209) 938-6350
Lathrop, CA 95330
(209) 938-6350
Gr: 9-12 | 1,486 students Student-teacher ratio: 22:1 Minority enrollment: 91%
Rank: #22.
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: #33.
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
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 high schools in Lathrop, CA?
The top-ranked public high schools in Lathrop, CA include Lathrop High School, Delta Charter Online and Delta Keys Charter.
How many public high schools are located in Lathrop?
4 public high schools are located in Lathrop.
What is the racial composition of students in Lathrop?
Lathrop public high schools minority enrollment is 89% of the student body (majority Hispanic), which is more than the California public high schools average of 79% (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.