Warren Township HSD 121

The list for Warren Township HSD 121 contains one school, Warren Township High School, serving grades 9–12 and enrolling 3,537 students. The school’s 2025–2026 results were generally stronger than Illinois results for the same tests and grades, and its graduation rate was also higher than the state’s. The most important finding is that the school exceeded the state in eight of nine reported test results.

Because there is just one school in the list, there is no local top-to-bottom school comparison; Warren Township High School is the only school to consider. Its strongest state-relative results were in grade 9 science, grade 9 English language arts, and grade 10 science, each about 5 percentage points above Illinois. Across all nine comparisons, the school averaged about 3 points above the state. English language arts had the largest average advantage, about 4 points, while mathematics had the smallest, about 1 point. The exception was grade 11 ACT science: 47% of students were proficient, compared with 48% statewide, a shortfall of about 1 point.

The school remained above the state on average, but its margin narrowed: across the same nine comparisons, the average advantage went from 4 points in 2024–2025 to 3 points in 2025–2026. Grade 10 English language arts and science results each fell about 5 points, while grade 9 mathematics rose 4 points; these yearly results are for different groups of students. SchoolDigger rated the school 201 of 620, in the 68th percentile, with 3 stars in 2025–2026, compared with 163 of 698, in the 77th percentile, and 4 stars the prior year; the ranking groups differed in size. The school reported a 15.6 student-teacher ratio for 2024–2025 and a free/reduced lunch eligible measure of 28% in 2021–2022. Because the list has only one school, it cannot show how the school compares with local peers.