Best Elementary Schools in Zip Code 66521

Elementary Schools in ZIP code 66521 consist of one school, Onaga Elementary, serving prekindergarten through grade 5 with 164 students. There is no second local school for comparison, so the results are best understood against Kansas averages and across subjects and grades. In 2025–26, Onaga was slightly above the state in all-grade English language arts (ELA) and math, and substantially above it in science: 47% versus 46% in ELA, 44% versus 41% in math, and 60% versus 38% in science. The most important takeaway is that strong overall science results coexist with a pronounced grade 4 weakness.

Science is Onaga Elementary’s clearest standout, at 22 percentage points above Kansas; its all-grade advantages in ELA and math are only 1 and 3 points. Grade-level results show a sharp split: in grade 3, Onaga is 5 points above the state in both ELA and math, and in grade 5 it is 9 points above in ELA and 15 points above in math. Grade 4 is the low point, trailing Kansas by 21 points in ELA and 15 points in math. SchoolDigger places the school 292nd of 657 statewide, in the 56th percentile with 3 stars; the Onaga-Havensville-Wheaton district ranks 39th of 268, in the 85th percentile with 4 stars.

Results improved overall from 2024–25 to 2025–26, but not in every subject. ELA rose 8 percentage points, from 39% to 47%, while math slipped 1 point, from 44% to 44%; science climbed 27 points, from 33% to 60%. SchoolDigger’s school percentile ranking also rebounded, moving from 53rd in 2023–24 to 36th in 2024–25 and 56th in 2025–26, with star ratings of 3, 2, and 3. The school reports a student–teacher ratio of 12.3 and a 54% free/reduced-lunch rate for 2024–25; these offer context, but there is no other school in the ZIP code for comparison.