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For the 2026 school year, there are 4 public high schools serving 554 students in Charles Mix County, SD.

The top-ranked public high schools in Charles Mix County, SD are Wagner High School - 01 and Platte - Geddes High School - 01. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.

Charles Mix County, SD public high schools have an average math proficiency score of 39% (versus the South Dakota public high school average of 40%), and reading proficiency score of 76% (versus the 63% statewide average). High schools in Charles Mix County have an average ranking of 9/10, which is in the top 20% of South Dakota public high schools.

Charles Mix County, SD public high school have a Graduation Rate of 87%, which is more than the South Dakota average of 82%.

The school with highest graduation rate is Platte - Geddes High School - 01, with ≥90% graduation rate. Read more about public school graduation rate statistics in South Dakota or national school graduation rate statistics.

Minority enrollment is 69% of the student body (majority American Indian), which is more than the South Dakota public high school average of 35% (majority American Indian).