Best Public Schools in Oswego, KS

Oswego, Kansas, has two schools serving preschool through grade 12: Oswego Neosho Heights Elementary (PK–5, 178 students) and Oswego Junior-Senior High School (grades 6–12, 195 students). Their student-teacher ratios are similar, at 10.6 and 10.1, respectively. Across the two schools, the average result is closest to the state in ELA—about 1 point below—while the averages are 11 points below in math and 9 points below in science. The most important shared concern is math, particularly at the high school, where proficiency is 18 points below the state.

Neosho Heights Elementary leads the pair in all three 2025–26 “All Grades” subjects: its proficiency is 12 points higher than the high school’s in ELA, 14 points higher in math, and 3 points higher in science. It is 5 points above the state in ELA, but 4 points below in math and 7 below in science. The high school is below the state in all three subjects—by 7 points in ELA, 18 in math, and 10 in science. Results also vary by grade: elementary grade 3 is above the state in ELA and math, while grade 5 is below by 16 points in ELA, 18 in math, and 15 in science. The schools serve different grade spans, so their overall results are not a grade-for-grade comparison.

Recent changes point in different directions at the two schools. From 2024–25 to 2025–26, high-school math fell 7 points and science fell 10, while elementary ELA rose 17 points and math rose 10; elementary science, however, dropped 31 points. SchoolDigger’s ranking percentile declined from 74 to 30 for the high school over three years, while Neosho Heights rose from 12 to 37. As context, free/reduced-lunch rates were 70% at the high school and 53% at the elementary school; chronic absenteeism was 8% and 16%, respectively, compared with 10% districtwide and 18% statewide. These are differences in school context, not explanations for test results.