In front of a massive assembly, with many children wearing beanies, the Muswellbrook Public School Year 5 student shaved his head - under the guidance of hairdresser Kylie Wilton - in support of the Cure Brain Cancer Foundation.

With his fellow pupils cheering the youngster on, he managed to raise a substantial amount for the organisation, which is the largest dedicated funder of brain cancer research in Australia.

The school's Treat Day, hosted by the Student Representative Council (SRC), amassed in excess of $1300, while a further $500 was bestowed by Nathan's dad's generous work colleagues.

"I'm okay now, I feel good," the lad said as he looked at his tresses on the floor.

But, the biggest compliment came from classroom teacher Tara Stanford.

"Nathan's been growing his hair for two years in anticipation for this [Treat Day]," she explained.

"So, that takes a lot of commitment for someone so young.

"However, he's extremely humble about it.

"And, even though he can't remember what gave him the idea, Nathan just wanted to do something to help people who are suffering - and raise awareness for the cause.

"We're very proud of him."

Ms Stanford also praised the Muswellbrook SRC for its efforts.

"They're amazing," she said.

"The children are very pro-active, like a mini-council.

"The different grades contribute treats - and the kids pay 50 cents for each one.

"They can also make a gold coin donation to attend school [today] out of uniform.

"Any money we collect will go towards the foundation to help with their research.

"The SRC members totally do it all on Treat Day, so full credit to them."

To learn more about Cure Brain Cancer, visit www.curebraincancer.org.au