Summary:
Lamberton, Minnesota has two schools — Red Rock Central Elementary serving grades PK–6 with 244 students, and Red Rock Central Secondary serving grades 7–12 with 160 students — both part of the Red Rock Central School District, sharing the 509 S Birch St area, with no middle or alternative school listed and a total enrollment of 404. The district is rated 4 stars and 116th of 458 in Minnesota, the 75th percentile. The two schools serve different age groups, and their results have recently moved in opposite directions.
Red Rock Central Elementary is the standout. It ranked 112th of 869 schools in 2025–2026 (87th percentile, 4 stars), up from the 64th percentile in 2023–2024 — a 23-point percentile gain and a 203-position rank improvement. It beats both the district and the state in every core subject: Math 64.3% (district 53.6%, state 44.9%), Reading 65.8% (53.4%, 48.6%), and Science 41.7% (34.2%, 25.5%). It also improved in all three subjects year over year, including a 12.6-point Math gain. Grade-level results are striking, with 4th grade Math at 89.7% and 3rd grade Math at 87%.
Red Rock Central Secondary shows a different picture. Its completion outcomes are excellent — a 100.0% graduation rate and 0.0% dropout rate in 2024–2025, versus 84.9% and 4.2% statewide. Its ranking, though, has swung widely: 78th percentile in 2023–2024, 95th percentile (5 stars) in 2024–2025, then 67th percentile (3 stars) in 2025–2026. It trails the district and state in Math (38.3%) and Reading (37.1%), with Reading down 12.3 points, yet leads the state in Science (30.8% vs. 25.5%). Bright spots include 11th grade Math at 50% and End of Course Science at 42.9%; weaker results cluster in 7th and 8th grade Math and Reading. As a result, the gap between the two schools widened in 2025–2026 to roughly 26 points in Math and 28.7 points in Reading. Secondary also has more students on free/reduced lunch (48.12% vs. 40.57%), and class sizes are small at both — student-teacher ratios of 11.0 and 12.9.
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