High Schools in Cusd 308

The two high schools in Cusd 308—Oswego High School and Oswego East High School—serve grades 9–12. In 2025–26, both schools scored above state proficiency rates in every listed ACT and PreACT result. The clearest overall finding is that both outperform the state on all nine comparisons, but East leads Oswego in every one.

Oswego East stands out at the top: its proficiency rates range from 48% to 78%, with leads over Oswego of 4–11 percentage points. The biggest gap is Grade 10 PreACT math: East scored 48%, Oswego 37%, and the state 36%. Oswego is the lower-scoring school in all nine comparisons, though its results remain above state rates; its narrowest margin is about 1 point in Grade 10 math, while its largest is 9 points in Grade 9 ELA. Science and ELA are the schools’ strongest subjects relative to the state, averaging about 10 points above state rates; math averages 8 points.

Recent results are mixed, with Oswego’s most notable gain in Grade 9 PreACT math, up 13 points from 36% to 49%; East gained 4 points on that test. Both schools’ SchoolDigger percentiles are above their 2023–24 levels, though below their 2024–25 levels: Oswego moved from the 60th to 75th percentile, and East from the 82nd to 85th; ratings are 4 stars for both most recently. Their 2024–25 student–teacher ratios are similar: 15.8 at Oswego and 15.6 at East. Both report free/reduced lunch eligible figures for sy 2024–25—31% at Oswego and 24% at East. Graduation rates are 95% and 97%, respectively, versus 90% statewide. Attendance merits attention at Oswego: chronic absenteeism is 27%, compared with 21% at East and 24% statewide.