HS teams compete in local leagues in Slow pitch Softball/Badminton, Track & Field and Golf
MS teams compete in Mixed touch, Track and Badminton. There is also a MS softball co-ed club which meets once per week.
Season 3 begins early February and ends Mid to end of April with the IASAS tournaments for the HS sports above.
Mixed Touch(MS only): MS Mixed touch teams attend a tournament at the end of April/first week of May each year hosted by Jakarta International School. Participants are home-stayed with families from the host school. The trip departs Friday and returns Sunday with tournament play on Friday evening and all day Saturday. A traveling group of 32 players and 2/3 coaches represents ISM in a boys/girls and mixed gender team competition.