Committee co-leader Anton Curach, 17, said a head shave had been held last year and the committee had decided to turn it into an annual event.
Last year's events had raised $3000 and, so far this week, the committee had reached $1700.
"The events work pretty well considering how much we raised last year and how much we want to raise this year," he said. "Everyone I know has someone in their family or a friend affected by cancer."
Tia said cancer was something which affected everyone in some way, even if it was just second-hand.
Gavin Powell, 17, was one of the students who volunteered to have his locks lopped.
"The committee asked me and I thought it was a good cause," Gavin said.
"I shaved my head for cancer about this time last year.
"I've had family friends who have had cancer and the Cancer Society does an amazing job for people who are going through it, so it's a real worthwhile cause."
Gavin has been raising money by asking friends and family to donate.
He had managed to raise about $30 so far and was hoping to get more.
He said he was not worried about losing his hair, but he would need to wear a beanie in coming weeks to keep his head warm.