Chinle High School is a public high school in Chinle, an unincorporated area of Apache County, Arizona, United States. The school is the only high school in the Chinle Unified School District, and all of the district's elementary and middle schools feed into it. Chinle High School serves several unincorporated areas in Apache County, including Chinle, Cottonwood, Del Muerto, Lukachukai, Many Farms, Nazlini, Rough Rock, Sehili, Tsaile, and small portions of Round Rock and Sawmill. The areas the school serves are within the Navajo Nation.