The 60m-long flying fox was christened by pupils at the school last Friday but not before the heavyweights had thoroughly tested it.
School caretaker and flying fox project manager Trevor Graham said there had been a lot of engineering expertise directed at the new structure and it had also been tested on adults.
''We had a guy on here who weighed 110kg.''
Principal Melissa Mitchell-Bain, the first to try the flying fox after its official opening, said as far they knew it was the longest one in Dunedin, although she was not 100% sure of that.
''It is something that the kids have always wanted. It is a great confidence builder, great for fitness and kids have to judge the risks involved.''
Mr Graham said they had laid down 40cu m of bark as a safety precaution at the end of the flying fox.