Best Public Schools in Plano, IL

Plano, Illinois, has five schools in Plano CUSD 88: two elementary schools, two middle schools and one high school, serving students from early childhood through high school. The supplied 2025–26 test results cover four schools; P H Miller Elementary School has no scores in the data. The clearest area-wide finding is that the three schools with all-grades IAR results were below state averages in both subjects: their average was 41% in ELA versus 56% statewide, and 26% in math versus 40% statewide.

Schools show different strengths: Plano Middle School led in all-grades ELA at 52%, ahead of Emily G Johns School at 41% and Centennial Elementary School at 29%; Centennial led in math at 32%, compared with 25% at Plano Middle and 23% at Emily G Johns. The top-to-bottom spread was 23 percentage points in ELA and 9 in math. Plano Middle’s eighth-grade science result, 52%, was close to the state’s 52%. Comparisons are not fully like-for-like because the schools serve different grades, and P H Miller has no supplied test scores.

Recent changes are mixed: Plano Middle’s all-grades ELA rose 7 percentage points, and its eighth-grade science increased 15 points; Centennial’s math rose 3 points while its ELA fell 8. At Plano High School, grade 11 ACT scores improved by 3 points in ELA, 9 in math and 6 in science, even as its grade 10 PreACT results declined in all three subjects. SchoolDigger’s reported percentile for the high school fell from 53 to 31 over three years, a separate measure from test scores. In 2024–25, free/reduced lunch eligible shares ranged from 50% at the high school to 57% at Plano Middle; student-teacher ratios ranged from 12.2 at Plano Middle to 14.5 at P H Miller.