The massive effort saw 21 of the school's teachers and P&C members shave their heads in support of those diagnosed with blood cancers.

CPS teacher, event organiser and team leader, Emma Tree, said it had been an exciting experience.

"I wasn't nervous at all leading up to it but once I sat down it was very nerve racking with all the children watching," she said.

"But it's mostly exciting to have them all there and being a part of it.

"It's a bit cold, very light and it's very freeing."

She said the whole idea of fundraising for the Leukaemia Foundation had come out of their competitive nature.

"We're a very competitive staff, we love friendly competition, a couple of us were playing a game of squash and one lost badly and had to shave his head," she said.

"Then it just snowballed, everyone jumped on and it became this wonderful thing.

"It's only been going for just over two weeks, we started with just one person shaving their head and we thought we might raise $1000.

"But we ended up with 21 people shaving and over $36,000 raised, it all happened so quickly, so we are very grateful."

Ms Tree said the Leukaemia Foundation's cause was one close the staff at the school.

"It's very important, we have a lot of staff members that are directly affected with family members," she said.

"It was really important for a lot of them, a lot of it was a moral boost and something that brought us together, which made everyone excited and happy.

"The long hair will be going to the Greatest Shave to make wigs and the shorter hair will be collected to make hair booms which will be put in the ocean to suck up oil spills in emergencies, it's all going somewhere."

Ms Tree said she was hoping to get other staff members on board for future fundraisers.

"I don't know if we'd have enough hair for next year," she said.

"But I might be able to get the other staff members on board in a few years time."

Cowra Public's Principal, Jenny Lewis, said the shave was a huge day for the school.

"I'm incredibly proud and so inspired by the amazing staff here at Cowra Public School and the amazing local community who have gotten behind the school to support such a worthwhile cause in the Leukaemia Foundation," she said.

"When the staff first came to me with their idea, their intention was to raise $1000.

"So I think raising $36,000 has far surpassed anyone's expectations and just goes to show the amazing community spirit of our school for such a worthwhile cause."

Ms Lewis said Ms Tree's work was a "phenomenal achievement".

"I thought she was crazy, but Emma can do anything, she's an inspiration to so many people and she was able to get everyone on board," she said.

"Getting 20 people to voluntarily shave their head is quite a feat, she's a very persuasive person.

"It's a phenomenal achievement, we're only a small community so to have that support from far and wide, friends and family from across the state, all across Australia and all across the world have donated to this cause, I'm amazingly proud."