Summary:
ZIP code 62258 has one listed high school, Mascoutah High School, serving grades 9–12 and enrolling 1,243 students. With only one school in the area, there is no local school-to-school leader or trailing school to compare. The clearest academic finding is that Mascoutah’s 2025–2026 proficiency rates were above Illinois’s in all nine reported subject-and-grade comparisons, with advantages ranging from 6 to 22 percentage points.
Mascoutah stands out most in English Language Arts: its average advantage over the state across grades 9–11 was 17 percentage points, compared with 13 points in math and 10 in science. Its largest single gap was grade 11 ACT English Language Arts, at 72% proficient versus 50% statewide, or 22 points higher. Other reported measures also compare favorably with the state: graduation was 98% versus 90%, dropout was 1% versus 2%, and chronic absenteeism was 19% versus 24%. However, absenteeism was 6 points higher than the 13% rate in Mascoutah CUD 19.
The school’s average advantage across the nine test comparisons grew from 11 percentage points in 2024–2025 to 13 points in 2025–2026, but results did not improve across the board: grade 9 PreACT math rose 7 points, while grade 11 ACT science fell 3 points. SchoolDigger gives Mascoutah 4 stars and ranks it 91st of 620 Illinois schools, at the 85th percentile, in 2025–2026; its 2024–2025 rating was also 4 stars and the percentile was also 85, so the rankings do not show a steady climb. Context figures include a 15.5 student–teacher ratio in 2024–2025 and 22% free/reduced lunch eligible in 2024–2025.
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