The High School environment, occupying the upstairs area of the main school, has a total of seven large, bright classrooms, all accessible from an undercover wooden-deck walkway. These include an Art and Design Centre, Science Room and Laboratory, Interactive Classroom and dedicated Language classes with their own library areas. On the undercover deck there is also a coffee corner and kitchenette, exclusively for the High school students.

The High School students have access to all extended KMS facilities.