Summary
Carterville High School serves 668 students in grades 9–12 in Carterville, Illinois, as part of Carterville CUSD 5. Its graduation and attendance figures are especially strong: in 2025–2026, all students graduated and 9% were chronically absent, compared with state rates of 90% and 24%. Most importantly, the school scored above the state in all nine reported subject-and-grade test comparisons.
Test results are a clear strength against nearby schools and the state, with 10th grade standing out. In 2025–2026, 10th graders scored 72% in English language arts (ELA), 52% in math and 67% in science—18, 15 and 18 points above state results. Those scores also exceeded nearby-school averages by 23, 25 and 27 points. Carterville led nearby schools with reported results in every 9th- and 10th-grade PreACT subject and every 11th-grade ACT subject. Its 11th-grade results were 65% in ELA, 55% in math and 54% in science; the state results were 50%, 40% and 48%. Science was the smallest state advantage, at 6 points. SchoolDigger’s 2025–2026 overall percentile was 84 (4 stars), compared with an average of 43 among the six nearby schools with rankings. The supplied district test results match the school’s, so they do not provide a separate comparison with other district schools.
Results have shifted by grade: from 2024–2025 to 2025–2026, 11th-grade ELA fell 12 points and 9th-grade ELA fell 13, while 10th-grade ELA rose 2; math rose 6 points in 11th grade and 9 in 10th, but fell 9 in 9th. SchoolDigger’s overall percentile has eased from 90 in 2022–2023 to 84, though the school remains ahead of nearby schools with current rankings. In 2024–2025, its student-teacher ratio was 17:1, the highest among nearby schools, and 43% of students were free/reduced lunch eligible, the lowest reported nearby share for that measure and year. SchoolDigger’s subgroup results also show notable shifts in how well the school serves particular groups: the Disabled Students percentile rose from 39 in 2023–2024 to 77 in 2024–2025, while the Multi-racial Students percentile fell from 84 in 2021–2022 to 33 in 2024–2025.
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