NISC offers students in Primary and Secondary Schools the opportunity to participate in a variety of competitive sports for students , including basketball, volleyball, football (soccer) and swimming. Each sports season is approximately 7-9 weeks long, not including school holidays and culminates in a Mekong Region International Schools Association (MRISA) sports exchange.
MRISA exchanges are hosted by one of the eight MRISA schools, and athletes and coaches from each school gather for two days of competition. All students are encouraged to participate in a MRISA exchange.
Teams compete in several friendly matches with local Phnom Penh schools in preparation for the MRISA exchanges. A maximum of 10 boys and 10 girls can participate in the exchanges and there will often be more players taking part in practices and friendly matches than players going to the tournament. Local matches provide an opportunity to maximize student participation, improve skills and gain experience.
Coaches teach the fundamentals of the games and seek to give athletes the necessary confidence to develop their skills, instilling in teams the importance of good sportsmanship, teamwork and giving their best effort. NISC embraces an approach that emphasizes participation and positive attitudes above a win-loss record.
As it happens with any school, various activities compete for the students' time.
In addition to sports practices and games, NISC students have the opportunity to participate in after school tutoring, music and drama activities. Homework also demands a substantial block of time each evening. With this in mind, the Athletic Department works in collaboration with students and teachers to achieve a balance that satisfies all parties.