Summary:
ZIP code 55304 is served by a single high school: Andover High School, a large public school in Andover, MN, serving grades 9–12 with 1,758 students as part of the Anoka-Hennepin School District. Because it is the only high school in the area, the most useful comparisons are between Andover High and its district, the state, and its own past performance. The school holds a 4-star rating in 2023–2024, 2024–2025, and 2025–2026, compared with 3 stars for the district.
Andover High's strongest results are in completion and science. Its 2024–2025 graduation rate was 95.1%, above the district's 88.7% and the state's 84.9%, while its dropout rate of 1.6% was lower than the district's 1.9% and the state's 4.2%. In 2025–2026, Science End-of-Course proficiency was 38.2%, above district (33.8%) and state (35.0%). Same-grade reading and math also beat district and state peers: 10th-grade reading was 51.1% versus 44.1% district and 42.5% state, and 11th-grade math was 40.4% versus 36.1% district and 35.3% state. One nuance matters: the school's all-grades math figure (40.4%) looks weak next to district all-grades math (51.0%), but that is largely an aggregation artifact, since Andover's all-grades math equals its 11th-grade figure, while district and state all-grades figures span many grade levels.
The caution flag is trajectory. Andover's rank percentile slipped from 88 in 2023–2024 to 86 in 2024–2025 to 79 in 2025–2026 — still top-quartile, but trending down. From 2024–2025 to 2025–2026, school math fell 7.43 points, reading 10.21 points, and science 2.56 points, steeper than district and state declines (the reading comparison is complicated by a change in exam labeling). For context, 16.5% of students qualified for free/reduced lunch and the student-teacher ratio was 20:1 in 2024–2025.
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