Jacksonville High School (JHS) is a public, coeducational secondary school in Jacksonville, Morgan County, Illinois.

It is the sole high school serving Jacksonville School District 117.

[2] The schools principal is Joey Dion.

[3] The demographic breakdown of the 913 students enrolled in 2021–22 was:[4] Additionally, 430 students (47.1%) were eligible for reduced-price or free lunch.

This Illinois school-related article is a stub.