Organisers of the Anchor AIMS Games have urged schools to pay close attention to health professionals' advice to help curb the spread of measles.
The annual tournament begins in Tauranga on September 8 with 11,500 entries from around New Zealand and the Pacific.
A large number of athletes will be from Auckland where the measles outbreak, which started in January, has had the most impact.
There are 731 confirmed cases in Auckland with a further 144 cases confirmed around the rest of the country.
Anchor AIMS Games Trust chairman and Otumoetai Intermediate principal Henk Popping said the health, safety and wellness of the athletes was of paramount importance.