Campuses
The current main campus, which houses grades 10-12 (Sophomores, Juniors, and Seniors) was built and opened in 1958. Also, the district expanded the main campus by extending the street-side hallway, thus adding another hallway stretching the length of the school along with multiple new classrooms.
The district completed construction on the strictly 9th grade or Freshman campus (Milburn) in the summer of 2009. The two campuses are approximately 10–15 minutes apart.
Read more about this topic: O'Fallon Township High School