Year 12 school leavers had sex on footy ovals and snorted drugs off each other's bottoms as part of daring muck-up day scavenger hunts that are now at the centre of a police investigation.
Checklists shared by Bunbury Senior High School and Manea Senior College students, south of , awarded points for increasingly lewd and illegal acts - with participants told to post 'evidence' of the stunts on social media.
Footage shared on of the Manea muck-up day appeared to show a young man using a bank card to snort a substance off a girl's bottom.
A male student is pictured appearing to use a bank card to snort a substance off a girl's bottom.
Year 12 school leavers also had sex on footy ovals as part of daring muck-up day scavenger hunts at two Western Australian schools
Other illegal challenges included slashing a car tyre, having sex in the street, and stealing a stranger's drive-through delivery order as it was being passed to them.
Videos also showed students jumping naked from a bridge, urinating from a tower and drinking from a bong as they documented their stunts.
One participant in a tradie uniform was filmed holding a pipe alongside the caption '58' - which referred to the task 'drink bong water after doing a bong'.
Police are calling for witnesses to the scavenger hunt acts to come forward after WA education officials referred the footage to authorities.
Both schools were aware the hunts were being organised, and sent warnings to parents and police when teachers learned what the challenges would involve.
'I am shocked that any young person would let themselves, their school communities and their families down in this manner,' Department of Education deputy director-general Melesha Sands told Daily Mail Australia.
One participant in a tradie uniform was filmed holding a pipe alongside the caption '58' - which referred to the task 'drink bong water after doing a bong'
<div class="art-ins mol-factbox news" data-version="2" id="mol-3c699c80-376d-11ec-8cdd-6175fd06917e" website Outrageous WA muck-up day scavenger hunt by Year 12 students