Summary:
ZIP code 55040 in Isanti, Minnesota contains four elementary schools serving pre-kindergarten through fifth grade, with a combined enrollment of about 1,139 students. Three of them — Isanti Intermediate School, Isanti Primary School, and Cambridge-Isanti STEAM School — belong to the Cambridge-Isanti Public School District, while Art and Science Academy is its own district. Isanti Primary School serves PK–2, so it has no state MCA test results, and Art and Science Academy serves K–4, so it has no grade-5 science scores.
Among the three schools with test data, Cambridge-Isanti STEAM School is the clear academic standout. It posted the highest all-grade proficiency in both math (47.8%) and reading (46.3%) in 2025–26, making it the only school in the group above the state math average (44.9%), and it improved sharply over the prior year, gaining 8.4 points in math and 11.1 points in reading. Its rank percentile rebounded from 27 to 43, though it remains below its 53 from three years earlier. By contrast, Isanti Intermediate School, the largest school with 422 students, is the negative standout: it fell below its district and the state in all three subjects, with reading at 31.4% and science at 13.7%, and its rank percentile slid from 30 to 23. Art and Science Academy declined for a second straight year, with math at 36.2% and reading at 34.5%.
Science is the broadest shared weakness: no tested school came close to the state's 25.5%. Only Cambridge-Isanti STEAM School exceeded the state in math, and no school in the ZIP beat the state reading average of 48.6%. Enrollment is concentrated in the two Isanti schools, which together hold nearly 73% of students. Isanti Intermediate School has the highest free/reduced lunch rate (40.05%), while Cambridge-Isanti STEAM School has the lowest (23.74%). Isanti Primary School looks favorable on resources with the lowest student-teacher ratio, 12.8, but its students cannot be evaluated with MCA data until later grades.
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