Summary:
ZIP code 61938 includes four schools serving students from elementary through high school, with 2,740 students in Arland D. Williams Junior Elementary School, Riddle Elementary School, Mattoon Middle School and Mattoon High School in Mattoon CUSD 2. Results differ by grade and subject, so the schools are best compared within similar grades and tests. The clearest broad academic standout is Williams, which was above state results in both all-grades elementary subjects.
Williams led the elementary schools overall in 2025–2026, with 61% proficient in ELA and 42% in math; Riddle had 51% and 39%, respectively, and was below state results in both. The gap between the elementary schools was 10 percentage points in all-grades ELA and 3 points in math. Riddle nevertheless had a 3rd-grade math bright spot: 59%, compared with 52% at Williams and 49% statewide. In 5th grade, Williams led Riddle by 26 points in ELA and 16 points in math. Mattoon Middle was below state results in all-grades ELA and math, but its 8th-grade math was 3 points above state. Mattoon High had ACT proficiency 8 points below state in ELA and 9 points below in math and science, while its graduation rate was 1 point above state and its dropout rate was lower.
Recent results improved in several elementary and middle-school measures, but not across the board: all-grades ELA rose at all three schools, as did math at Riddle and Mattoon Middle, while Williams’ math fell by 2 points. Mattoon High’s ACT math fell by 5 points, and its 9th-grade PreACT science fell by 10 points. SchoolDigger ranked Williams in the 51st percentile, Riddle in the 37th, and Mattoon Middle and Mattoon High in the 35th in 2025–2026; these are relative rankings, not test-score changes. The schools’ 2024–2025 student-teacher ratios ranged from 11.5 at Mattoon Middle to 16.9 at Mattoon High. For 2024–2025, the reported measure was free/reduced lunch eligible: 69% at Williams, 71% at Riddle, 65% at Mattoon Middle and 48% at Mattoon High; these figures describe school context, not the cause of results.
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