Sierra High

Sierra High operates as a sizable four-year high school in Manteca, California, operated by Manteca Unified. Current enrollment sits at 1,670 students spanning grades 9 through 12. That puts it 99% above the typical public school in California, which averages around 838 students.

Sierra High is one of 30 schools operated by Manteca Unified, a district that educates 25,347 students overall.

For racial and ethnic makeup, Sierra High shows that the largest single group is Hispanic at 44%, but no single group is in the majority. The remainder looks like 28% Asian, 19% White, 4% Black, 4% multiracial. That composition is broadly in line with San Joaquin County as a whole.

Looking at the economic backdrop, Staff filings list 74 full-time-equivalent teachers, which works out to roughly 22.7:1 students per teacher. The state averages around 18.2:1, so this campus is higher than the state norm typical. Around 56% of the student body qualifies for free or reduced-price meals, often used as a Title I proxy. That share is noticeably below San Joaquin County's rate of about 66%.

With demographic context factored in, Sierra High performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 46.2%, the actual is 45.7%, a residual of -0.5 points.

In the surrounding community, the surrounding county (San Joaquin County) logs that median household income runs about $92,179, 23% of adults hold a bachelor's degree or higher, and the poverty rate sits near 10%. Across San Joaquin County's 251 public schools (combined enrollment of about 153,026 students), Sierra High is one campus in the mix.

The closest other public school is Brock Elliott Elementary, roughly 0.5 miles away. Counting just inside five miles, 8 other public schools cluster around Sierra High. Among the 6 schools in that immediate cluster with test data (this one included), Sierra High ranks 1st on composite proficiency, above the local average of 30.8%.

Sierra High operates from an outer-ring location.

Five-year trend. Looking back 7 years, enrollment at Sierra High has increased 17%, going from 1,429 students in 2018 to 1,670 in 2025. Asian enrollment moved from 16% to 28% across the same window. The student-to-teacher ratio grew from 20.1:1 in 2018 to 22.7:1 today.

On this page, members of the Sierra High community share and discuss science fair prep, picture-day reminders, and bus-route questions. Contributors range from current parents to recent graduates and teachers.