Summary:
Township HSD 214 has six high schools serving grades 9–12. In 2025–2026, the schools’ average proficiency was 12 to 15 percentage points above the state in each of the nine matching ACT and PreACT measures. The key takeaway is that strong district-wide averages hide large differences from one school to another.
John Hersey High School was the clearest test-score leader, ranking first in seven of nine measures; its scores were 19 to 28 points above the average of the other five schools in those comparisons. Prospect High School led grade 10 PreACT science and had the highest reported graduation rate, 96%, compared with 90% statewide. At the other end, Wheeling High School had the lowest score in seven measures, 20 to 28 points below the other five schools’ average. Its grade 9 ELA and science results were exceptions: ELA was 61.9%, just above the state’s 61.5%, and science was 49%, above the state’s 47%. Elk Grove High School had the lowest scores in all three grade 9 PreACT subjects.
Overall results were nearly flat between 2024–2025 and 2025–2026, though changes varied by school and grade. Buffalo Grove High School had the largest average improvement across the nine measures, up 2 points; Elk Grove’s grade 10 scores rose 7 points in ELA, 9 in math and 5 in science, while its grade 9 ELA and science fell 13 and 10 points. SchoolDigger ranks Prospect 22nd and Hersey 17th statewide, both with five stars, and Buffalo Grove 71st. The schools’ free/reduced lunch eligible shares, reported for school year 2021–2022, ranged from 16% at Prospect to 52% at Wheeling; this is context, not an explanation of results. Student-teacher ratios for 2024–2025 ranged from 15.2 at Wheeling to 17.3 at Hersey. These results and comparisons are a two-year snapshot.
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