Summary:
ZIP code 55115 covers Mahtomedi, Minnesota, where three public schools serve students in grades 3 through 12 — O.H. Anderson Elementary (grades 3–5), Mahtomedi Middle (grades 6–8), and Mahtomedi Senior High (grades 9–12) — all in the Mahtomedi Public School District, a 2,592-student district that ranks 12th of 458 districts in Minnesota (97th percentile, 5 stars), with every school earning 5 stars.
Each school has its own strength. Mahtomedi Middle is the consistency leader, holding the 97th percentile for three straight years (17th of 546 schools) and posting the ZIP code's highest reading proficiency at 67.3%, including 75.3% in 6th-grade reading. O.H. Anderson Elementary is the math standout at 75.4% all-grade proficiency, with 3rd- and 4th-grade math above 78%. Mahtomedi Senior High has the strongest completion outcomes: a 95.8% graduation rate and 0.7% dropout rate, far better than the state's 84.9% and 4.2%, plus 11th-grade math at 57.8% and 10th-grade reading at 64.7%, both well above state benchmarks. All three schools exceed state proficiency in every subject.
Science is the lowest subject across the ZIP code (high school 37.1%, middle 33.9%, elementary 36.0%), though 8th-grade science still far outpaces the state (33.9% vs. 16.7%). Most scores slipped from 2024–2025 to 2025–2026, with elementary science down about 10.5 points and elementary reading down about 4.7 points, while middle school reading improved slightly. Free/reduced lunch rates are low, ranging from 11.49% to 15.11%, and student-teacher ratios run from 16.4 at the elementary school to 20.5 at the high school.
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