Summary:
Zip code 96113 has four schools serving kindergarten through grade 12: Mt. Lassen Charter (K–12), Sierra Primary (K–6), Herlong High (grades 9–12), and Fort Sage Middle (grades 7–8), all in Fort Sage Unified. The main concern is that reported 2025–2026 proficiency is low compared with California: the three schools with ELA results averaged 13%, versus 49% statewide, and the three with math results averaged 6%, versus 38%. Even the local leaders were well below state results.
Sierra Primary led reported All Grades results, with 14% proficient in both ELA and math. Its math result was 13 percentage points above the average of the other schools with reported scores; its ELA result was 2 points above that peer average. At the other end, Fort Sage Middle had 0% proficiency in math and 11% in ELA; the ELA results across reporting schools spanned 3 points, while math spanned 14. Mt. Lassen Charter reported 14% in ELA, 3% in math, and 3% in science. Herlong High’s school-level test results are suppressed, so it cannot be compared on current proficiency.
Recent results show different directions by subject: among Mt. Lassen Charter and Sierra Primary, the average ELA result rose from 11% to 14% between 2024–2025 and 2025–2026, while their average math result was essentially unchanged at 9%; Mt. Lassen Charter’s science result fell from 16% to 3%. Attendance is another notable difference: chronic absenteeism was 3% at Mt. Lassen Charter, compared with 42% at Herlong High, 44% at Fort Sage Middle, and 53% at Sierra Primary. Student-teacher ratios range from 6.7 at Fort Sage Middle to 20.2 at Mt. Lassen Charter. All four schools report free/reduced lunch eligible figures for 2024–2025, ranging from 68% at Sierra Primary to 89% at Fort Sage Middle; these measures offer context, not an explanation of results.
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