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For the 2025-26 school year, there is 1 public high school serving 213 students in Lake Mills, IA.

The top ranked public high school in Lake Mills, IA is Lake Mills Senior High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.

Lake Mills, IA public high school have an average math proficiency score of 77% (versus the Iowa public high school average of 65%), and reading proficiency score of 82% (versus the 71% statewide average). High schools in Lake Mills have an average ranking of 9/10, which is in the top 20% of Iowa public high schools.

Lake Mills, IA public high school have a Graduation Rate of 90%, which is more than the Iowa average of 87%.

The school with highest graduation rate is Lake Mills Senior High School, with ≥90% graduation rate. Read more about public school graduation rate statistics in Iowa or national school graduation rate statistics.

Minority enrollment is 14% of the student body (majority Hispanic), which is less than the Iowa public high school average of 27% (majority Hispanic).