Summary:
Winnetka has six schools—three elementary, two middle and one high school—serving grades K–12. The latest results show strong performance across the area, with differences among schools most noticeable in mathematics. The most important finding is that every reported 2025–2026 result was above its matching state benchmark: the five IAR schools were 29–34 percentage points higher in ELA and 40–56 points higher in math, while New Trier Township H S Winnetka was 37–47 points higher on ACT and PreACT Secure subjects.
Greeley Elementary School stands out in math: its All Grades result was 95%, compared with 79% at The Skokie School, a 16-point difference. Greeley also led the K–4 schools in third- and fourth-grade math. Skokie led All Grades ELA at 90%, while Crow Island Elementary School had the lowest result, 86%—a 5-point gap. Crow’s third-grade math was a notable exception to its stronger schoolwide picture: 80%, below the other two K–4 schools, though still 31 points above the state. New Trier’s ACT and PreACT results were also well above state figures; the list has no other local high school for comparison.
Results changed unevenly over time. From 2024–2025 to 2025–2026, the five-school average rose from 85% to 87% in ELA and from 82% to 85% in math; the average math gap to the state widened from 43.9 to 45.6 points, while the ELA gap narrowed slightly from 31.4 to 30.8 points. Greeley also improved its SchoolDigger ranking from 47th of 2,067 schools to 17th of 1,737, with its percentile moving from the 98th to the 99th. Context figures do not establish what drives results: in 2024–2025, Greeley had the highest reported student–teacher ratio among the elementary and middle schools, 12.8, yet led in math; the two middle schools had ratios of 8.9. The reported free/reduced lunch eligible measure was from 2021–2022 and ranged from 0.8% at Carleton W Washburne School to 3.2% at New Trier.
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