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Public school district · Suburb: Large
California · Contra Costa County

Orinda Union School District

2,594 students · 5 schools · 21.1:1 ratio · grades K–8 · #422 of 1976 in California

Students
2,594
Schools
5
Teachers (FTE)
123
Student–Teacher
21.1:1
County
Contra Costa
Grades
K–8
OverviewEnrollmentDemographicsStaffingFundingPerformanceAccreditationCompareFull data
Overview

About Orinda Union School District

Orinda Union School District is a public school system serving Contra Costa County, California, based in Orinda. It serves 2,594 students across 5 schools spanning K–8, and is classified as a suburb: large district. By enrollment it is the #422 largest of California’s 1976 school systems.

Phone9252544901
Address8 Altarinda Rd., Orinda, CA 94563
CountyContra Costa County
Enrollment & schools

Size and structure

Orinda Union School District enrolls 2,594 students in 5 schools — an average of about 519 students per school. It serves grades K–8 and ranks #422 of 1976 statewide by enrollment.

Students
2,594
#422 of 1976 in California
Schools
5
~519 students each
Grade span
K–8
Suburb: Large
Students & demographics

Who the district serves

Student race and ethnicity in Orinda Union School District, from the NCES Common Core of Data (2,594 students reported):

White
52%
Black
1%
Hispanic
8%
Asian
20%
Two or more
18%
Amer. Indian
0%
Pacific Isl.
0%

For economically-disadvantaged, English-learner, and special-education shares, plus school-by-school detail, see the federal sources in the full-data section.

Staffing & support

Teachers & staff

Orinda Union School District employs about 123 full-time-equivalent teachers for a student–teacher ratio of 21.1:1 — below the California average of about 21.7:1, meaning comparatively smaller classes. Total district staff is roughly 257.

Student–teacher ratio
21.1:1
state avg ~21.7:1
Teachers (FTE)
123
classroom teachers
Total staff
257
all district employees

Counselor and librarian/media counts are not published at the district level in the current NCES release; see the federal full-data links for staffing detail.

Funding

How California funds schools

California funds schools through the Local Control Funding Formula (LCFF): a base grant per unit of average daily attendance for each grade span, plus a supplemental grant (20% of the base) and a concentration grant (65% of the base) driven by the share of low-income students, English learners and foster youth. Districts are funded on the greater of current-year, prior-year or a three-year-average attendance.

District-level per-pupil spending and the local/state/federal revenue split for Orinda Union School District are published in the federal school-finance files — see the full-data links below for the current figures.

Accountability

Report card & state results

California reports school and district performance on the California School Dashboard, which rates indicators from red to blue across academic performance in English and math, chronic absenteeism, graduation rate, suspension rate, English-learner progress and college-and-career readiness. Look up Orinda Union School District on the California School Dashboard.

Accreditation

Accreditation status

In California, most schools that seek K–12 accreditation use ACS WASC (the Accrediting Commission for Schools, Western Association of Schools and Colleges) rather than Cognia. Search Orinda Union School District’s schools in the ACS WASC directory.

How it compares

Orinda Union School District vs. California

Enrollment rank
#422
of 1976 districts
Ratio
21.1:1
state avg ~21.7:1
Locale
Suburb: Large
Contra Costa County

See every California district side by side in the California directory.

Go deeper

Look up Orinda Union School District’s full data

These official sources carry the district-level detail — finances, discipline, equity, test scores, boundaries. Direct links for this district (via its NCES ID):

Data & sources

About this data

Enrollment, demographics, staffing, locale and contact details reflect the NCES Common Core of Data (2024–25); funding context from the California Department of Education (the Local Control Funding Formula) and NEA Rankings & Estimates 2026. Figures are the latest available and may lag the current school year. This page is informational, not an official district record, and not affiliated with or endorsed by Orinda Union School District. NCES District ID (LEAID): 0628860. Confirm current details with the district and the California Department of Education.