Summary:
High Schools in the Warren-Alvarado-Oslo School District consist of a single school: Warren-Alvarado-Oslo Secondary, which serves grades 6–12 to 273 students in Warren, MN. At the district level, Warren-Alvarado-Oslo School District is ranked 205th of 458 in Minnesota, placing it in the 55th percentile with 3 stars. The high school itself is ranked 283rd of 473 schools, in the 40th percentile with 2 stars for 2025–2026, suggesting the district’s broader rating is stronger than the current rating of its only high school. The school has a 22:1 student-teacher ratio and a 36.26% free/reduced lunch rate.
Since Warren-Alvarado-Oslo Secondary is the district’s only high school, it defines what families can expect here. Its clearest strengths are completion outcomes: a 90.0% graduation rate, 5.1 points above the state’s 84.9%, and a 0.0% dropout rate versus the state’s 4.2%. Sixth grade reading is a bright spot at 56.3%, above the state’s 53.4%. All-grade science rose from 14.71% to 20.0% and now slightly edges the district’s 19.1%, though it trails the state’s 25.5%. All-grade proficiency improved year over year in math (26.9% to 32.6%), reading (43.26% to 45.5%), and science (14.71% to 20.0%), and the school’s rank recovered from 1 star and the 17th percentile in 2024–2025 to 2 stars and the 40th percentile.
Challenges remain in proficiency. Math is the weakest subject at 32.6% all-grade, below the district’s 43.9% and the state’s 44.9%, with the largest gaps in 11th grade (22.2% vs. 35.3%) and 8th grade (29.4% vs. 42.3%). Reading is closer at 45.5% versus 48.6% statewide, though 10th grade reading is 35.1% against 42.5%. Eighth grade science, at 11.8%, is below the state’s 16.7% and among the lowest reported scores. In short, students are graduating on time, but tested proficiency — especially math and 8th grade science — still trails state levels.
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