Summary:
ZIP code 55128 in Oakdale, Minnesota is home to a single high school: Tartan Senior High, a grades 9–12 school with 1,687 students in the North St. Paul-Maplewood Oakdale district. Because it is the only high school in the ZIP code, there is no local peer comparison, so the useful benchmarks are the district, the state, and the school's own prior-year results.
Tartan Senior High graduates 89.5% of its students, above the district's 86.3% and the state's 84.9%, while its 3.9% dropout rate is slightly above the district (3.4%) but below the state (4.2%). Test proficiency tells a more mixed story. In 2025–26, math proficiency was 19.2%, far below the district's 29.5% and the state's 44.9% — a 25.7 percentage-point gap to the state. Reading was 36.9%, slightly above the district's 35.3% but 11.7 points below the state's 48.6%, and science was 21.5%, above the district's 16.8% but 4.0 points below the state's 25.5%. Year over year, math rose 4.78 points and science 4.58 points, while reading fell 4.69 points.
The school's ranking improved from 1 star and the 28th percentile in 2024–25 to 2 stars and the 35th percentile in 2025–26, though it remains below its 2023–24 standing of 3 stars and the 51st percentile. Context matters: 59.22% of students qualify for free/reduced lunch and the student-teacher ratio is 23.3. Overall, Tartan Senior High is relatively strong on graduation and science, weakest in math, and shows encouraging recent gains even as proficiency remains below state levels.
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