Vernon Hills High School

Vernon Hills High School serves 1,419 students in grades 9–12 in Vernon Hills, Illinois, as part of Chsd 128. SchoolDigger ranks it 21st of 620 Illinois schools, in the 97th percentile with five stars; it ranks fifth among the seven nearby schools in this comparison. The main takeaway for families is that its students perform well above state proficiency rates, but the school generally falls short of its district on the same tests.

In 2025–26, Vernon Hills High School exceeded state proficiency rates in all nine reported tests, with its clearest subject strength in math. Its results were below the district on eight tests, although 10th-grade science was narrowly higher (81.3% versus 81.0%) and 10th-grade math was close (71% versus 71%). Compared with the six nearby schools, Vernon Hills was above the average in all three 10th-grade subjects—by 5 points in ELA, 5 in math, and 7 in science. Its 11th-grade ELA and science were 2 and 4 points below nearby averages, while math was essentially even. Graduation was 96% in 2025–26, close to the district’s 95% and above the state’s 90%; chronic absenteeism was 18%, below the state’s 24% but above the district’s 16%.

Recent results are mixed rather than moving steadily up or down: from 2024–25 to 2025–26, 10th-grade math rose 8 points and ELA rose 4, while 11th-grade ACT ELA fell 3 points and math fell 1. The school’s student-teacher ratio was 12.3 in 2024–25, compared with a 14.0 average at nearby schools. Its free/reduced lunch eligible measure was 13% in 2021–22, near the nearby-school average of 12%. SchoolDigger’s statewide measure of how well the school serves African American students placed it in the 75th percentile in 2024–25, compared with the school’s overall 97th percentile that year. Its measure for how well it serves multi-racial students was in the 82nd percentile in 2025–26, down 11 percentile points from 2024–25.