Summary:
Zip code 95945 has one middle school, Lyman Gilmore Middle, serving grades 5–8 with 464 students; there are no other local middle schools to compare it with. In 2025–2026, its all-grade ELA proficiency was 41%, compared with 49% statewide and 43% in the Grass Valley Elementary district; science was 34%, close to the state’s 36%. The most important concern is mathematics: 25% of students were proficient, 13 percentage points below the state and 8 points below the district.
The strongest results were in fifth-grade ELA and science, while seventh-grade ELA was the clearest weak spot. Fifth-grade ELA proficiency was 54%, 4 percentage points above the state, and fifth-grade science was 40%, 5 points above. By contrast, seventh-grade ELA was 30%, 21 points below the state; eighth-grade ELA was also 15 points below. Mathematics was below the state at every reported grade, with seventh grade particularly low at 19%, compared with 38% statewide. Because this is the only school in the ZIP code, these are differences among grades at the school, not a ranking of local schools.
Recent score movement is mixed: from 2024–2025 to 2025–2026, ELA rose from 37% to 41% and its state gap narrowed from 12 to 8 points; math rose from 24% to 25%, with its gap narrowing only slightly, from 13.4 to 13.2 points. Science rose from 32% to 34%, but the state’s gains were larger, widening the school’s deficit. SchoolDigger gives the school 2 stars; its statewide percentile ranking fell from 45th in 2023–2024 to 38th in 2025–2026. Chronic absenteeism was 30%, versus 24% in the district and 18% statewide. Other context includes a 19.2 student-teacher ratio in 2024–2025 and 73% free/reduced lunch eligible in 2024–2025; these figures describe the school, not the cause of its results.
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