In its 80 years, Community High School District 99 has grown from one small building to two large modern comprehensive high schools, and from five original graduates to more than 1,400 graduates each year.

The District was established in 1923 by residents who wanted to create a separate high school district. North High School opened its doors in 1928. To accommodate growth in the community, South High School was completed in 1964. Since its early days, both schools have undergone major additions and renovations to accommodate growth and changes in education. The most recent was the expansion and renovation project that was completed in 2001 and funded by a $49.5 million voter referendum.