Old River Elementary

Located at 30 Learning Ln., in Brentwood, California, Old River Elementary is a small primary school that hosts 332 students (grades K through 8), run under Knightsen Elementary. That puts it 29% leaner than the typical public school in California, which averages around 465 students.

Knightsen Elementary comprises 2 schools with combined enrollment of 648 students; Old River Elementary is among them.

On the student-mix side, Old River Elementary reports that 46% of students identify as White, with the remaining enrollment distributed across several groups; the rest breaks down as 38% Hispanic, 8% multiracial, 5% Asian, 3% Black.

Looking at school resources, Old River Elementary records 15 full-time-equivalent teachers, putting the student-to-teacher ratio at about 22.5:1. The state averages about 22.3:1, putting this campus right in line with peers. About 15% of enrolled students meet the income threshold for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. By comparison, Contra Costa County runs at roughly 45%, so the school's eligibility rate is meaningfully below the surrounding baseline.

After controlling for student poverty, Old River Elementary is in the bottom 10% of California public schools. The BeatsExpectations model predicts schools with this FRL share to land around 70.4%; Old River Elementary posts 54.5%, -15.8 points below that line.

In the area at large, the surrounding county (Contra Costa County) shows that median household income runs about $127,229, roughly 45% of adults have completed at least a four-year degree, and census figures put the poverty rate at about 6%. Across Contra Costa County's 280 public schools (combined enrollment of about 167,423 students), Old River Elementary is one campus in the mix.

The closest other public school is Byron Institute for Independent Study, roughly 1.9 miles away. 8 of the 8 nearest public schools sit inside a five-mile radius. Among the 7 schools in that immediate cluster with test data (this one included), Old River Elementary ranks 2nd on composite proficiency, above the local average of 43.7%.

Old River Elementary operates from a small-town location.

Trend over the last 7 years. Over the past 7-year window, the student count ticked up 65%: 201 students in 2018 compared to 332 in 2025. The Hispanic share of enrollment rose from 31% to 38% over that span.

Inside the community feed, the page collects discussion, questions, and updates around pickup logistics, teacher feedback, and after-school programs. The community welcomes input from current and former families.