Clarendon Hills Middle School (CHMS) is one of the two 6-8th grade schools in district 181. It is one of 5 public middle schools that feed into Hinsdale Central High School. Approximately 700 students were enrolled in CHMS for the 2009–10 school year. CHMS was recently ranked by the Chicago Tribune as the 14th best middle school in the state (based on ISAT scores). More than 96% of the students' test scores were categorized as meeting or exceeding the Illinois Learning Standards.