In 1979, she returned to high school in Junee, and she has not left since.

"I didn't think I'd be here so long, but I've never regretted it," she said.

"I've never wanted to move on. I've always enjoyed it here, so I suppose when I stop enjoying it, I'll move on.

"It's a long time to be in school, and I haven't stopped learning this whole time."

When she first walked through the doors of Junee High School, on February 26 1979, she carried with her the title of 'teacher's aide'. Now, her role has expanded and her title transformed into 'school administration officer'.

"Teacher's aide was a lot different back then to what it is now," she explained.

"Back then I did a lot of photocopying, and duplicating, and videoing education programmes off the television for different classes."

These days, Ms Belling primarily works inside the science department, preparing equipment ahead of class experiments.

As each decade of her more than four decades at the school has brought with it a fresh generation of students, Ms Belling has seen many changes.

"I was here before computers," she said.

"They brought them into classrooms first, and then we got them [in the office]. It was a trick to learning it all, but that's just the job. You had to learn as things came up you need to know."

Then there are a few things that have not changed in the time she has spent surrounded by the town's teenagers.

"When I first started out, I remember there was a fashion where the kids - girls in particular - would wear desert boots with white socks," she said.

"I remember thinking it was the funniest thing I've ever seen. It's come back a bit, and I still think it's funny."

But though she has spent years surrounded by students, she admits few would know she is there.

"People always say to me, 'you must love working with kids', but I honestly don't see a lot of them. I've seen a lot of staff come though," she said.

Ms Belling also recognises that the school's staff have supported her through years of trials too.

A couple of years ago, when she was diagnosed with breast cancer, Ms Belling was reluctant to take time off from her job.

"I had to take a term off during the chemo, but I worked through the radiation," she said.

"The staff were so brilliant, as soon as I was diagnosed the principal said to me, 'we'll work around what you need'."

To commemorate her years of service to the school and its community, current Junee High School principal Scott Frazier delivered an address in her honour.

"Marg has seen so much, done so much, known and forgotten so much and still keeps coming back," he said.

"Marg, you are an inspiration to everyone and you should be [fittingly] proud of your achievement."