Summary:
Johnsburg, Illinois, has three public schools serving grades 3–12: Johnsburg Elementary School, Johnsburg Junior High School, and Johnsburg High School. Together, they enroll 1,261 students, with individual school enrollments ranging from 373 to 502. Recent results show a mix of strengths: Junior High is above the state in overall English language arts (ELA), and High is above the state on all three 11th-grade ACT subjects. The clearest current concern is fourth-grade math at Elementary: 23% proficient versus 42% statewide, 19 percentage points below.
Junior High stands out for all-grades IAR ELA, with 61% proficient compared with 56% statewide, a 5-point advantage; its math result is 4 points below state. High leads its state comparisons on 11th-grade ACT science, ELA, and math, with advantages of 12, 8, and 5 points, respectively. Its 10th-grade PreACT is also above state in all subjects, but 9th-grade PreACT is below state across the board, including science by 12 points. Elementary’s all-grades results are below state in ELA by 4 points and math by 8 points; fifth-grade ELA and science are exceptions, both above state. These school and grade results offer different strengths rather than a simple overall ranking.
Junior High’s results improved notably from 2024–2025 to 2025–2026: all-grades ELA rose from 38% to 61%, and math from 25% to 37%, though math remains below state. SchoolDigger’s latest statewide percentiles are 47th for Junior High, 37th for Elementary, and 66th for High; the rankings have fluctuated over the past three years. Student-teacher ratios range from 13.2:1 at High to 14.8:1 at Junior High. All three schools report free/reduced lunch eligible figures for 2024–2025: 32% at High, 35% at Elementary, and 31% at Junior High. These figures provide context, not an explanation for differences in results.
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