Costello School is located in Lyons, IL and is one of 5 elementary schools in Lyons School District 103. It is a public school that serves 319 students in grades K-5. See Costello School's test results
to learn more about school performance.
In 2011, Costello School had 14 students for every full-time equivalent teacher. The Illinois average is 16 students per full-time equivalent teacher.