Summary:
Zip code 62258 includes three schools in Mascoutah CUD 19, serving students from prekindergarten through grade 12: Mascoutah Elementary School (PK–5), Mascoutah Middle School (6–8) and Mascoutah High School (9–12); together they enroll 3,069 students. The most important overall finding is that every supplied 2025–26 test result at all three schools was above its matching state comparison.
Mascoutah Elementary School stands out for its all-grades IAR results: ELA proficiency was 79% versus 56% statewide, a 23-point advantage, and math was 65% versus 40%, a 26-point advantage. Its fourth-grade math result had the largest listed margin, 80% versus 42%, or 38 points. Mascoutah Middle School’s strongest listed result was sixth-grade ELA, 83% versus 59%, a 24-point advantage. Mascoutah High School’s strongest was 11th-grade ACT ELA, 72% versus 50%, a 22-point advantage; its tightest listed margin was ninth-grade PreACT science, 53% versus 47%, or 6 points. Since the schools test different grades and use different assessments, their proficiency results do not support a fair overall test-score ranking.
Results changed differently by school: Elementary all-grades IAR math fell 7 percentage points from 2024–25, while Middle all-grades ELA rose 7 points and math rose 2; High ACT ELA rose 4 points, but ACT science fell 3. SchoolDigger’s 2025–26 statewide standings were 86th percentile for Elementary, 85th for High and 78th for Middle, all lower than their 2023–24 standings by 6, 5 and 11 points, respectively. Context measures also differ: in 2024–25, free/reduced lunch eligible shares were 27% at Elementary, 21% at Middle and 22% at High; student-teacher ratios were 16.7, 15.1 and 15.5. In 2025–26, High had the highest chronic absenteeism at 19%, compared with 12% at each of the other schools, though High’s graduation rate was 98% versus 90% statewide.
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