Summary:
The Isleton area has one listed elementary school, Isleton Elementary, serving kindergarten through sixth grade and enrolling 188 students. In 2025–2026, its all-grade proficiency was above the state result in English language arts, math and science. The clearest strength is science, where the school led the state by 24 percentage points.
There is no meaningful top-to-bottom comparison among local schools because Isleton Elementary is the only one listed. Compared with state results, it was ahead by 6 points in ELA, 15 in math and 24 in science; its advantages over River Delta Joint Unified were 17, 32 and 35 points, respectively. Grade-level results show some variation: sixth-grade ELA was 73%, 25 points above the state, and fifth-grade math was 65%, 28 points above. Third grade was the main exception: ELA was 36%, 8 points below the state, and math was 32%, 15 points below.
Results shifted unevenly from 2024–2025 to 2025–2026: all-grade ELA fell by 6 points, while math and science each rose by 3. The school remained ahead of the state in all three subjects, but its average advantage across them narrowed from 16 points to 15, largely because of the ELA decline. SchoolDigger rates the school four stars and places it at the 73rd percentile statewide; its percentile was 71st in 2023–2024 and 75th in 2024–2025. Chronic absenteeism was 8%, compared with 20% in the district and 18% statewide. For context, the reported student–teacher ratio was 23.5 for 2024–2025, and 79% of students were free/reduced lunch eligible that school year. Because only one school is listed, these figures cannot show how it compares with other Isleton schools.
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