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For the 2025-26 school year, there are 7 public high schools serving 1,820 students in Cassia County, ID.

The top ranked public high schools in Cassia County, ID are Oakley Jr/sr High School, Raft River Jr/sr High School and Declo Senior High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.

Cassia County, ID public high schools have an average math proficiency score of 29% (versus the Idaho public high school average of 37%), and reading proficiency score of 44% (versus the 58% statewide average). High schools in Cassia County have an average ranking of 3/10, which is in the bottom 50% of Idaho public high schools.

Cassia County, ID public high school have a Graduation Rate of 85%, which is more than the Idaho average of 80%.

The school with highest graduation rate is Declo Senior High School, with ≥95% graduation rate. Read more about public school graduation rate statistics in Idaho or national school graduation rate statistics.

Minority enrollment is 35% of the student body (majority Hispanic), which is more than the Idaho public high school average of 26% (majority Hispanic).