In the Interschool Round, all students from a school work on the same test and will submit a single answer sheet for the entire team. Interschool is divided into Junior Interschool and Senior Interschool. Schools can only compete in one Interschool level (Junior or Senior) determined by the competing student in the highest grade. Junior Interschool is made up of schools that have only 9th graders or lower competing in RCML. Senior Interschool is made up of schools that have any student that is in 10 grade or above competing in RCML.