Lammersville Elementary, Tracy CA

Original Research by School Decision on Lammersville Elementary

Lammersville Elementary is a small K-8 school in Tracy serving about a third of a district that spans two communities with very different characters. The school sits on the rural edge of the city along West Von Sosten Road, drawing from both Tracy's suburban neighborhoods and the newer master-planned community of Mountain House to the south.

The student body is diverse: roughly half Hispanic, about a third white, with smaller shares of Asian, Black, and multiracial students. About a third of students qualify for free or reduced-price lunch, a marker of economic diversity in the school. Enrollment is modest, with the upper grades slightly larger than the lower ones.

State test results from the most recent year show uneven performance across grades and subjects. In math, proficiency ranges widely: third grade performs solidly, while fourth and fifth grades dip noticeably lower, seventh grade drops further, and eighth grade recovers somewhat. English language arts shows a similar pattern of volatility. Sixth grade breaks the downward trend in ELA with the school's strongest result there, while eighth grade rebounds in that subject too. Science testing in fifth and eighth grades shows mid-range results. On balance, across all tested subjects and grades, the school's overall proficiency sits above the midpoint among schools in San Joaquin County, but the grade-to-grade swings suggest the school may face consistency challenges in building skills across the K-8 span.

A parent may want to look into what is driving the sharp drops in fourth and fifth grade proficiency and seventh grade math, to understand whether those reflect cohort-specific factors, instructional gaps, or transition challenges in the middle grades.

The school serves a small enrollment in a growing area. Tracy itself is expanding through large master-planned communities, and the district opened a new K-8 campus at nearby Mountain House in 2023, signaling where growth is happening. Housing in Tracy has cooled recently but remains above state and national benchmarks; the area functions as an affordable commuter route to the Bay Area, drawing families seeking space and value. The district's only high school, Mountain House High School, recently completed a major classroom expansion to support a seven-period day that lets participating students take an extra course, a structural advantage for course access down the line.

Lammersville Elementary itself appears to be a neighborhood school anchoring an older, less rapidly developing part of the district's service area, distinct from the newer suburban and master-planned growth on the south side.

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Academic performance

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

Math

Grade 358%

School 58% · District 74% · ▼ 17 pts below district

▲ 15 pts above state median · ▲ 27 pts above county median

Grade 439%

School 39% · District 73% · ▼ 33 pts below district

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

Grade 530%

School 30% · District 70% · ▼ 40 pts below district

even with state median · ▲ 10 pts above county median

Grade 658%

School 58% · District 73% · ▼ 15 pts below district

▲ 27 pts above state median · ▲ 35 pts above county median

Grade 722%

School 22% · District 72% · ▼ 50 pts below district

▼ 8 pts below state median · even with county median

Grade 847%

School 47% · District 74% · ▼ 27 pts below district

▲ 19 pts above state median · ▲ 24 pts above county median

English language arts

Grade 353%

School 53% · District 67% · ▼ 14 pts below district

▲ 12 pts above state median · ▲ 22 pts above county median

Grade 442%

School 42% · District 72% · ▼ 30 pts below district

even with state median · ▲ 12 pts above county median

Grade 532%

School 32% · District 75% · ▼ 43 pts below district

▼ 13 pts below state median · ▼ 1 pts below county median

Grade 674%

School 74% · District 77% · ▼ 3 pts below district

▲ 30 pts above state median · ▲ 40 pts above county median

Grade 730%

School 30% · District 78% · ▼ 48 pts below district

▼ 16 pts below state median · ▼ 7 pts below county median

Grade 860%

School 60% · District 80% · ▼ 19 pts below district

▲ 16 pts above state median · ▲ 21 pts above county median

Science

Grade 538%

School 38% · District 61% · ▼ 23 pts below district

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

Grade 850%

School 50% · District 73% · ▼ 23 pts below district

▲ 24 pts above state median · ▲ 31 pts above county median

Social studies

Grade 858%

School 58% · District 68% · ▼ 10 pts below district

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

This schoolLammersville Joint 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 4Lower-income8%Higher-income62%54 pp gap

Grade 6Lower-income54%Higher-income86%32 pp gap

Grade 8Lower-income58%Higher-income61%3 pp gap

Mathematics

Grade 4Lower-income8%Higher-income57%49 pp gap

Grade 6Lower-income39%Higher-income70%32 pp gap

Grade 8Lower-income58%Higher-income39%19 pp gap