These are the categories of participation for KMC:

 Category Pre-Ecolier Ecolier Benjamin Cadet Junior Student

 Malaysian School System

 Pre-School
Year 1 & 2
 Year 3 & 4 Year 5 & 6 Form 1 & 2 Form 3 & 4 Form 5, 6 & Pre-U
 International School System Pre-School
Year 1 & 2
 Year 3 & 4 Year 5 & 6 Year 7 & 8 Year 9 & 10 Year 11 & 12
 Age <7 to 8 9 to 11 11 to 12 13 to 14 15 to 16 17 to 19

Students outside the Malaysian school system (e.g. international school or home-schooled students) may select the appropriate category according to the student’s age.

Note: The categories are named after the original KMC divisions, based in France.