Western Australian schools will introduce new precautionary measures, including cancelling assemblies and staggering recess and lunch breaks, to slow the spread of the coronavirus.
School principals were advised to put distancing measures in place, and ensure students or staff returning from overseas abide by the 14-day self-isolation rules from today.
School events with more than 500 people including sports carnivals, concerts, exhibitions, and fairs will be cancelled or postponed until further notice.
Principals have also been advised not to hold full school assemblies and to stagger recess and lunch breaks at schools with more than 500 students.
Education Department director general Lisa Rodgers said schools would remain open unless otherwise authorised by the chief health officer.
"It's important we all work towards managing the impact and reducing the exposure of COVID-19 which is why these considered actions are being taken," she said.
"These decisions have been made with the best interests of staff and students in mind.
"This is the situation as it stands based on current advice and we will continue to keep schools informed."
