Summary:
The city of Isleton has one school, Isleton Elementary, serving kindergarten through grade 6 and enrolling 188 students. With no other local school to compare, families can look at its results against California and the district, as well as differences among grades and subjects. Most importantly, in 2025–2026 the school was above the state average in all three reported subjects: ELA was 55% versus 49%, math 53% versus 38%, and science 60% versus 36%, making science its clearest relative strength.
Isleton Elementary is the local leader by default, and its all-grades results also exceeded those of River Delta Joint Unified by 17 points in ELA, 32 in math, and 35 in science. However, the all-grades picture hides a weaker result in grade 3: ELA was 8 points below the state, and math was 15 points below. Grades 4–6 were above state results in both subjects; grade 5 science was 25 points above. The city’s single-school list cannot show whether performance is consistent across local schools.
Recent results moved in different directions: from 2024–2025 to 2025–2026, the school’s ELA score fell 6 points and its advantage over the state narrowed by 7 points; its math score rose 3 points and its state advantage grew by 2 points, while its science advantage was essentially unchanged. SchoolDigger rates the school 4 stars and places it at the 73rd percentile statewide in 2025–2026; its percentile was 71, 75, and 73 over the past three years. Chronic absenteeism was 8% in 2025–2026, below the district’s 20% and the state’s 18%. The student-teacher ratio was 23.5 in 2024–2025, and 79% of students were free/reduced lunch eligible that year.
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