The children's initial research led them to a folding stairlift which they spoke out about last August when the ANZ Bank opened a new downtown Auckland branch with two internal steps up from street level to the banking chamber.
The bank said at the time that there was "no room for a ramp", so it put a service desk at street level for disabled people who could not get up the steps.
Juliana Carvalho, an ANZ customer who could not get into the banking chamber last year, said the bank finally installed a lift in the branch about a month ago.
"I went there to pay a bill and used it! Victory!" she wrote in an email.
The children have now started a "Team Access MHP" Givealittle page to raise $25,000 for the Life Education Trust to buy a lift for its mobile classrooms.
Jasper Carpenter, also aged 10, said they got a quote of $19,250 for a portable lift, but they also needed to cover the costs of widening the doors in at least one mobile classroom to fit students in wheelchairs.
"We chose a portable lift so you would only need to get one and you could move it around," he said.
Life Education Counties-Manukau general manager Michelle Kidd said the trust had six mobile classrooms and would also make the portable lift available across the Auckland region.
"There are still a few issues, like transporting the lift and the width of the classroom doors, to be resolved before we make the purchase," she said.
The Givealittle page is www.givealittle.co.nz/cause/teamaccessmhp