Summary:
ZIP code 55008 has three elementary schools — Cambridge Primary School (PK–2), Cambridge Intermediate School (3–5), and the very small Cambridge-Isanti OLL Elementary K-5 (K–5) — all in the Cambridge-Isanti Public School District, which ranks at the 50th percentile statewide with 3 stars. Together they enroll 1,052 students, with Cambridge Intermediate at 536 (about 51% of the total) and Cambridge Primary at 498 (about 47%); OLL enrolls just 18 students.
Cambridge Intermediate is the only school with usable state test results, and it is the academic anchor here. In 2025–2026, all-grades math proficiency was 55.4%, above the district's 43.2% and the state's 44.9%; 5th grade math reached 55.4%, which is 13.5 points above the state. Science was 27.6%, also above both district and state. Reading is the weaker spot: 43.0% beats the district's 42.1% but trails the state's 48.6%, with 3rd grade reading 10.5 points below state and 5th grade 9.4 points below. Year over year, reading fell from 51.05% to 43.0% (−8.05 points), a steeper drop than the district's −4.76 or the state's −0.99; math slipped 3.27 points and science was essentially flat. Even so, the school still exceeded its district in every reported test.
Parents should know that Cambridge Primary and OLL cannot be compared academically from this data. Cambridge Primary serves PK–2, so it has no state test results here, and OLL's scores are all suppressed by the state — both should be treated as unknown, not as evidence of weak performance. Cambridge Primary has the lowest student/teacher ratio at 14.7; Cambridge Intermediate has the lowest free/reduced lunch rate at 36.01% but the highest ratio at 16.3, while OLL has the highest FRL rate at 44.44%.
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