QuickCheck: Did a school in Sabah forbid student attendance due to the heatwave?

A VIRAL message is making the rounds saying students at SMK Pinggan-Pinggan in Kota Marudu, Sabah, were forbidden to attend school due to the current heatwave.

The message also said the hot weather could cause heatstroke among the students and that the school's cross-country run would be cancelled due to the weather.