Summary:
Zip code 66066 has one elementary school, Oskaloosa Elementary, serving prekindergarten through grade 6 and enrolling 255 students. The school’s 2025–26 results show a mixed picture compared with Kansas: proficiency was 50% in science, 40% in English language arts (ELA), and 33% in math, versus 38%, 46%, and 41% statewide. Most importantly, science is the school’s clearest strength against the state, while math is its largest all-grades shortfall.
There is no top or bottom school to compare within the ZIP code, because Oskaloosa is the only school listed. Its results vary substantially by grade, so the schoolwide figures do not tell the whole story: grade 5 ELA proficiency was 70%, 19 percentage points above the state’s 51%, while grade 3 was 24%, 28 points below the state’s 52%. In math, grade 6 reached 58%, 17 points above the state’s 41%; grade 3 was 10%, 32 points below the state’s 43%. All-grades science was also 12 points above Kansas, at 50% versus 38%.
Across the three subjects, the school’s average moved from about 2 percentage points above the state in 2024–25 to about 1 point below in 2025–26. The relative trend differed by subject: the ELA gap shifted from 3 points above the state to 6 below, math remained about 8 points below, and the science lead grew from 10 to 12 points. SchoolDigger’s statewide ranking also fell from 363 of 653 schools (44th percentile) in 2023–24 to 434 of 657 (34th percentile) in 2025–26; it reported 2 stars in both entries. Other context includes a student-teacher ratio of 9.3 and a free/reduced-lunch rate of 55%. Chronic absenteeism was 12%, below the Oskaloosa Public Schools rate of 14% and the statewide rate of 18%.
Thank you for your feedback!