Summary:
ZIP code 74021 has three elementary schools in the Collinsville district, serving prekindergarten through grade 5 and enrolling 1,562 students altogether: Collinsville Ec Center serves prekindergarten–kindergarten, Herald Elementary School serves grades 1–2, and Collinsville Upper Elementary School serves grades 3–5. Only Upper has reported test scores, so the available information cannot establish which school is strongest academically across the ZIP code. The clearest academic finding is that Upper exceeded the state proficiency rate in every reported subject in 2025–2026.
Upper’s strongest reported results were in mathematics and science: its all-grade proficiency rates were 39% in math and 43% in science, compared with 25% and 30% statewide—advantages of 14 and 13 percentage points. Its ELA rate was 29%, 3 points above the state’s 26%. Within Upper, fifth-grade math was a particular bright spot at 50%, versus 33% statewide. For attendance, Herald had the lowest chronic absenteeism rate at 9%, followed by the Ec Center at 10% and Upper at 12%; all were below the state rate of 16%. Upper was the exception relative to the district, with absenteeism 1 point above the district’s 11% rate.
Upper’s results improved relative to the state from 2024–2025 to 2025–2026: its proficiency margins widened from 1 to 3 points in ELA, 7 to 14 in math, and 10 to 13 in science. SchoolDigger’s statewide percentile ranking for Upper also rose over three years, from the 39th percentile in 2023–2024 to the 58th in 2024–2025 and the 69th in 2025–2026. For other points of comparison, 2024–2025 student-teacher ratios were 16.7 at Upper, 15.1 at Herald, and 18.1 at the Ec Center. The 2024–2025 free/reduced lunch eligible measure ranged from 45% at Herald to 50% at the Ec Center, with Upper at 45%; these are contextual figures, not explanations for school results.
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