RCCU#1 is a unified K-12 public school district based in Olney, IL. The school district serves much of the eastern portion of Richland County, Illinois, including the cities and towns of Olney, Claremont, Parkersburg, Berryville, Dundas, Calhoun, and Stringtown. 

The district operates one elementary school, 
Richland County Elementary School; one middle school, Richland County Middle School; and one high school, Richland County High School.