For Model Farms High School's student representative council, there was no question when it came to supporting the R U OK? Day mental health initiative.
About 800 students spelt out the phrase "R U OK?" in groups on the school oval last Thursday.
School captains Hannah Candelario and Sam Donohoo said it was important teenagers had support around them.
"It's surprisingly common to have mental health problems like depression and anxiety," Miss Candelario said.
"It really affects how you are at school and how you interact with people."
Mr Donohoo said that it was easy to get behind the health initiative.
"This is a cause that doesn't get a lot of attention in schools and I think a lot of teens find it hard to say to their friends 'I'm not OK, and I need help'," he said.
Councillors, outdoor staff and department heads were represented at the Hills Council's R U OK? Day barbecue breakfast, where everyone shared a laugh over coffee and bacon, egg and sausage rolls.
"It's about just starting a general conversation — it doesn't have to be deep — and making the time to really listen," mayor Michelle Byrne said.
Council's building co-ordinator Evan Whale said he had found that another way to engage others was to ask them to join the council's touch football team.
"We play twice a week at lunch, just whoever turns up," Mr Whale said.
New research by the R U OK? Foundation shows that more than 90 per cent of Australians feel they should ask of friends who are struggling "are you OK?", no matter how difficult it is.
Suicide is the leading cause of death for Australians between 15 and 44.
"Some people might tell you to jump in the lake when you ask 'are you OK?', but the person who's ready to talk may just open up," councillor Jeff Lowe said.