Summary:
ZIP code 55921 is home to a single high school: Caledonia Senior High, a grades 9–12 school with 259 students in Caledonia, Minnesota, part of the Caledonia Public School District. Because it is the only high school in the ZIP code, there are no local schools to compare it against — so the most useful benchmarks are the district and the state. By those measures, it stands out clearly: for 2025–26 it ranked 26th of 473 Minnesota high schools, placing it in the 95th percentile with a 5-star rating, while the district ranked 15th of 458.
Outcomes for students are strong. The 2024–25 graduation rate was 94.5%, compared with 84.9% statewide, and the dropout rate was 2.7% versus 4.2% statewide. In 2025–26 testing, science was the standout: 54.8% of students were proficient, more than double the state's 25.5%. Reading proficiency was 56.5% against a state rate of 48.6%, and math was 49.2% against 44.9%. At the specific grade levels tested, the margins were even wider — 11th-grade math ran 13.9 points above the state, 10th-grade reading 14.0 points above, and end-of-course science 19.8 points above.
The school's trajectory has been upward. Its state rank climbed from the 76th percentile in 2023–24 to the 95th percentile in 2025–26. Math proficiency rose from 38.6% in 2024–25 (below the state's 45.21%) to 49.2%, now above the state. Reading slipped from 66.67% to 56.5% but remains above the state average. The student-teacher ratio is 13.4, and 16.22% of students qualify for free or reduced lunch — the file offers no state or district comparison for either figure.
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