Dr Robert Close, of the University of Western Sydney, said the collar on Vicky that tracked her movements showed she was a regular attendant at faraway Kentlyn Public School.

``It shows she actually uses the school as a home base and goes out on little forays from there,'' said Dr Close, the longtime author of the weekly Mac Koala column in the Advertiser.

Last month, Curls became the first koala visitor to Airds High School and last year she entertained pupils at Woodland Road Public School in St Helens Park.

Dr Close said Curls had gone into people's gardens too.

He said koalas were also sometimes seen at Leumeah High School and even at Ambarvale High School.

Dr Close said koalas came to Kentlyn Primary School so often that the pupils hardly bothered to mention it.

``Our colony animals have been living around Kentlyn Primary School since 1996 at least when Lyn first arrived,'' he said.

``We've had a number of sightings where kids have said `I think there are koala droppings in our backyard' and the parents say `Don't be silly'.

``And, of course, they go out and there's a koala sitting up in the tree.''

Dr Close said koalas liked going to the premises of primary schools because they provided food and shelter.

``It's a real smorgasboard because you've got lots of native trees and lots of plant trees so you've got lots of variety and also there are no dogs there so the trees are big and they're mature,'' Dr Close said.

``We tend to find them more in the holidays but we'll still find them there during term time.''

Dr Close wants anyone who sees a koala to leave it alone and ring the koala pager, 99629996.