Summary:
ZIP code 61011 has one listed school, Caledonia Elementary School, serving PK–5 and enrolling 449 students; it is part of Belvidere CUSD 100. With no second listed school, families can compare its results with district and state figures, but not with another school in the ZIP. In 2025–2026, Caledonia’s all-grades math proficiency was 41% and fifth-grade science was 51%, above state results of 40% and 48%; its all-grades ELA was 51%, below the state’s 56%. The most important takeaway is that Caledonia is above the state in math and fifth-grade science, but trails in ELA.
Caledonia stands out most clearly against its district: it exceeded district results by 9 percentage points in ELA, 12 points in math, and 12 points in fifth-grade science. Compared with Illinois, science was its strongest result, 4 points above the state, while ELA was its weakest, 6 points below. The grade-level results show more variation: third-grade ELA was 3 points above the state, while fourth- and fifth-grade ELA were 5 and 4 points below. In math, third grade was 6 points below the state, while fourth and fifth grades were roughly level with state results.
Caledonia’s state-relative position weakened in all three available year-to-year comparisons, though its scores did not all move in the same direction. ELA rose 1 point, but the state rose 3 points, widening Caledonia’s shortfall by 2 points. Math fell 4 points as the state rose 1, narrowing the school’s advantage by 5 points; fifth-grade science fell 2 points while the state rose 7, narrowing its advantage by 9 points. SchoolDigger placed Caledonia at the 42nd percentile in 2025–2026, down from the 59th percentile the previous year. Chronic absenteeism was 17%, below the district’s 26% and the state’s 24%. Other context includes a 13.5 student-teacher ratio in 2024–2025 and 43% free/reduced lunch eligible in 2024–2025; these figures describe the school and do not explain its results.
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