Sugar Gliders aren't a good pet for children. The bites you can get can go right into the bone and Sugar gliders can get scared easily and bit in defence.
There are also a number of deceases that can be transmited to humans. Some of them quite serious. Salmonella, Leptospirosis, Clostridium piliforme, giardiasis,cryptosperidiosis, toxoplasmosis to name a few. Not only deceases but also mites, lice, fleas, taper worm, ring worm can be transfered.
Keeping the cage clean and there bedding and food and water bowl clean will make a big difference to the transmitting of these deceases.