Sierra Middle

Sierra Middle is one of the mid-tier intermediate schools in Stockton, California, run under Lincoln Unified, with 591 students on its rolls from grades 7 through 8.

Sierra Middle is one of 13 schools operated by Lincoln Unified, a district that educates 8,721 students overall.

On the student-mix side, Sierra Middle records that Hispanic students make up the majority at 57%. Other groups include 17% White, 11% Black, 9% Asian, 6% multiracial. That is visibly more Hispanic than the county at large, where the share is closer to 43%.

Looking at the economic backdrop, The school employs 28 full-time-equivalent teachers, for a student-teacher ratio near 21.1:1. The state averages about 20.7:1, putting this campus right in line with peers. Roughly 72% of students at Sierra Middle qualify for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal.

On a residual basis (actual vs predicted given the student mix), Sierra Middle sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 36.4%; this one delivers 37.6%.

Across the wider county, census data for San Joaquin County shows median household income runs about $92,179, 23% of adults hold a bachelor's degree or higher, and the poverty rate sits near 10%. Sierra Middle is one of 251 public schools in San Joaquin County (combined enrollment of about 153,026 students).

The closest other public school is Lincoln High, roughly 0.2 miles away. Counting just inside five miles, 8 other public schools cluster around Sierra Middle. Among the 7 schools in that immediate cluster with test data (this one included), Sierra Middle ranks 2nd on composite proficiency, higher than the local average of 28.9%.

Geographically, the school is in a downtown area.

Trend over the last 7 years. Looking back 7 years, enrollment at Sierra Middle has declined 10%, going from 658 students in 2018 to 591 in 2025. Over the same period, the Hispanic share ticked up from 43% to 57%. The student-to-teacher ratio fell from 26.1:1 in 2018 to 21.1:1 today.

On the community side, recent activity here tends to focus on classroom updates, athletics, and weather closures. The community welcomes input from current and former families.