Summary:
ZIP code 56762 is home to exactly one high school — Warren-Alvarado-Oslo Secondary, a grades 6–12 school in Warren, MN, serving 273 students as part of the Warren-Alvarado-Oslo School District. Because it is a combined middle and high school, its "All Grades" test results blend middle school and high school performance, which is important context when reading the numbers.
The school's strongest outcomes are in graduation and dropout rates: a 90.0% graduation rate matches the district and is 5.1 percentage points above the state's 84.9%, while its 0.0% dropout rate compares favorably with the state's 4.2%. Reading is the relative bright spot among test scores, with all-grade proficiency at 45.5% — only 3.1 points below the state — and 6th grade reading at 56.3%, above the state's 53.4%. Math is the clearest area of concern: all-grade math proficiency is 32.6%, 12.3 points below the state's 44.9%, with 11th grade math at 22.2% and 8th grade math at 29.4%. Science is mixed — all-grade science at 20.0% is slightly above the district's 19.1% but below the state's 25.5%, and 8th grade science at 11.8% is the lowest reported score in the record.
There is encouraging momentum. All-grade proficiency improved from 2024–2025 to 2025–2026 in math (26.9% to 32.6%), reading (43.26% to 45.5%), and science (14.71% to 20.0%), even as district science fell. The school's state rank rebounded from the 17th percentile and 1 star in 2024–2025 to the 40th percentile and 2 stars in 2025–2026, though it remains below the district's 3-star, 55th-percentile ranking. With a 22:1 student-teacher ratio and 36.26% free/reduced lunch, the school serves a moderate-sized secondary population. Overall, families will find strong graduation and dropout results and clear academic improvement, alongside continuing gaps in math and science.
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