Olinda Elementary, El Sobrante CA

Original Research by School Decision on Olinda Elementary

Olinda Elementary serves kindergarten through sixth grade in El Sobrante, an unincorporated community in northeast Contra Costa County marked by rolling hills, older single-family housing stock, and a dispersed suburban character. The school sits apart from the commercial core along San Pablo Dam Road, embedded in a residential neighborhood where families rely on cars for daily travel.

The enrollment is small, distributed across the seven grade levels served. Students come from a diverse background: the school has a substantial Asian population, a significant Hispanic enrollment, and smaller Black and white populations. About one-third of students qualify for free or reduced-price lunch, reflecting moderate socioeconomic need in the attendance area.

In state assessments, Olinda's proficiency results show a school working below where most families would hope to see students land. In math, performance ranges from the low end in fifth grade to stronger ground in third grade, though even the stronger results do not reach a point where the majority of students demonstrate proficiency. English language arts shows similar patterns: third and fourth graders cluster around low proficiency, while fifth graders score notably higher. Science proficiency in fifth grade, the only grade tested, sits below half. Across tested subjects and grades, the school's overall proficiency index places it above the midpoint when compared to other schools across Contra Costa County districts, though that positioning reflects significant regional variation rather than strong absolute performance.

The school has only one year of assessment data in the record, so no trend information is available to show whether performance is moving, stable, or shifting. A parent may want to look into this further with the school directly: understanding whether recent reading instruction changes at the district level, including the introduction of explicit phonics supplementation, are beginning to move results, or what other supports the school uses to help students develop foundational skills, would give important context for what these numbers mean on the ground.

The broader school environment carries uncertainty. Staffing data, attendance metrics, discipline records, and information about special education or English learner populations are not publicly reported for the school. What is visible is that the district, Olinda's parent entity, faces a serious fiscal crisis following a teachers strike settlement in December, with proposed cuts that could reshape class sizes, staffing, and programs. One of the district's redesign proposals would convert five K-8 schools to elementary-only, a change affecting grade configuration; it does not appear Olinda is named in those proposals, but families should monitor district communications, as budgetary and structural changes often ripple across schools.

The housing market in El Sobrante runs roughly in the mid-range for the Bay Area, with home values and rental costs both substantial but lower than many nearby neighborhoods. The community itself remains car-dependent and oriented around established suburban living rather than new density or commercial development, despite long-standing plans to revitalize the downtown corridor.

Olinda is a neighborhood elementary school in a stable if economically modest area, serving a diverse cohort of students whose academic results suggest they would benefit from intensive, well-resourced instruction in foundational reading and math. The school's standing relative to other county schools masks real gaps in proficiency that matter for student trajectory. For a family considering the school, the key questions are how the school diagnoses and responds to proficiency gaps at each grade level, what interventions and supports exist for students not meeting benchmarks, and how the district's fiscal pressures may affect the staffing and resources available to teach.

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Academic performance

How students perform on state tests, by grade, set against the district.

Math

Grade 355%

School 55% · District 34% · ▲ 21 pts above district

▲ 12 pts above state median · ▲ 11 pts above county median

Grade 444%

School 44% · District 30% · ▲ 15 pts above district

▲ 7 pts above state median · ▲ 5 pts above county median

Grade 540%

School 40% · District 23% · ▲ 17 pts above district

▲ 10 pts above state median · ▲ 9 pts above county median

Grade 648%

School 48% · District 27% · ▲ 21 pts above district

▲ 17 pts above state median · ▲ 20 pts above county median

English language arts

Grade 342%

School 42% · District 30% · ▲ 12 pts above district

▲ 1 pts above state median · ▲ 1 pts above county median

Grade 442%

School 42% · District 31% · ▲ 11 pts above district

even with state median · even with county median

Grade 560%

School 60% · District 32% · ▲ 28 pts above district

▲ 14 pts above state median · ▲ 12 pts above county median

Grade 648%

School 48% · District 35% · ▲ 12 pts above district

▲ 4 pts above state median · ▲ 9 pts above county median

Science

Grade 541%

School 41% · District 23% · ▲ 18 pts above district

▲ 13 pts above state median · ▲ 11 pts above county median

This schoolWest Contra Costa Unified, same grade

Graduation rate (ACGR) reflects the federally published Adjusted Cohort Graduation Rate for the most recent year available. We refresh this data annually at the close of each academic year in June. The federal source publishes a banded rate (for example, "90-94%") instead of an exact number for cohorts small enough to risk identifying individual students. The state distribution chart, where shown, plots every school in the state with a published rate or band; schools whose rate is federally suppressed are excluded. Where the federal source publishes a band rather than an exact rate, the school is placed within its band using a stable, ID-derived offset, so its position is consistent across visits.

Proficiency by household income

English language arts

Grade 3Lower-income28%Higher-income52%24 pp gap

Grade 4Lower-income40%Higher-income43%3 pp gap

Grade 6Lower-income44%Higher-income50%6 pp gap

Mathematics

Grade 3Lower-income61%Higher-income50%11 pp gap

Grade 4Lower-income53%Higher-income39%14 pp gap

Grade 5Lower-income18%Higher-income48%30 pp gap

Grade 6Lower-income44%Higher-income50%6 pp gap