Summary:
ZIP code 60089 has one listed high school, Buffalo Grove High School, serving grades 9–12 and enrolling 2,021 students. With no other listed high schools, families can compare its results with state and district figures, but not with local school peers. The clearest finding is that Buffalo Grove was above the state in all nine reported grade-and-subject comparisons in 2025–2026, by 11 to 21 percentage points.
Buffalo Grove’s strongest result relative to the state was grade 9 science: 68% proficient compared with 47%, a 21-point advantage. Its smallest advantage was in grade 10 ELA, where 64% were proficient versus 54% statewide, still 11 points higher. Across the reported grades, its average advantage was 17 points in both math and science, compared with 13 points in ELA. District comparisons show a less uniform picture: grade 10 results were below Township HSD 214 in all three subjects, while grade 9 results were above it in all three. Graduation was 2 points above the state, while chronic absenteeism was 3 points higher.
Results improved overall relative to the state, though not in every subject and grade: Buffalo Grove’s proficiency rose in seven of nine matched comparisons, and its average state advantage widened from 13 points in 2024–2025 to 15 points in 2025–2026. The largest gap increase was in grade 9 science; grade 11 ELA and grade 10 science scores declined. SchoolDigger gives the school four stars and ranks it 71st of 620 statewide, at the 89th percentile, for 2025–2026. Other reported context includes a student–teacher ratio of 16.8 in 2024–2025 and 29% free/reduced lunch eligible in 2021–2022; these figures describe the school and do not explain its results.
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