No monitor can reside in that enclosure. It does look very nice, and I commend you on that. But no monitor should live in there, especially a green tree, and especially not in a school!
If you must put it in a school, I'll make a few suggestions as to what you could put in it. Frilled dragons are fairly tolerant of veiwing and handling, so the school enviornment wont stress them too much, when captive bred of course. Buy from Sundial Reptiles or Dragon Attack for the best quality frillies. Males are much less shy than females by the way, and look cooler. They dont require more than a light spraying every other day, so the humidity wont be a problem. If you can get your hands on a giant gecko or two (they are more active and vocal in groups), that would be nice as well, if the room/hall it is in isnt too bright. Repashy Reptiles would be a perfect place to get one, as soon as his site is up. Maybe you can contact him another way and make a purchase that way, I dont know.
If you have any more questions, ask away. Glad to help. 
Ryan