Summary:
ZIP code 95457 has two high schools in Konocti Unified: Lower Lake High, serving grades 8–12 with 966 students, and Carle (William C.) High (Continuation), serving grades 9–12 with 85 students. The clearest overall finding is that Lower Lake leads on every reported 2025–2026 test measure, while both schools’ proficiency results are below state levels.
Lower Lake stands out as the stronger of the two: its all-grade proficiency was 30% in English language arts (ELA), 7% in math and 17% in science, compared with 10%, 0% and 4% at Carle. That means leads of 20 percentage points in ELA, 7 in math and 13 in science; 11th-grade results show the same pattern. Even Lower Lake remains below statewide proficiency in all three subjects. Its 94% graduation rate and 2% dropout rate also compare favorably with Carle’s 80% and 19%, but chronic absenteeism is high at both: 40% at Lower Lake and 95% at Carle, versus 18% statewide.
Both schools improved in all-grade ELA and science from 2024–2025 to 2025–2026, but Carle’s progress in ELA stands out: it rose 8 percentage points, compared with 2 at Lower Lake. Carle’s math result fell by 2 points, while Lower Lake’s rose by 3. SchoolDigger ranks Lower Lake 1,631st of 2,137 schools (24th percentile; 1 star) and Carle 2,066th (3rd percentile; 0 stars). For context, 2024–2025 free/reduced lunch eligible figures were similar: 76% at Lower Lake and 78% at Carle. Lower Lake’s 2024–2025 student-teacher ratio was 21.3, compared with 14.6 at Carle. These measures are observations, not explanations for test outcomes; Carle’s smaller enrollment and the schools’ different grade spans are also important context when comparing results.
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