I have to respectfully disagree with Mike.
I would think for classroom animals, people would prefer to display them.
I know when I was in high school, I appreciated looking at a nice classroom display enclosure. Tubs don't really allow that.

I use a rack. And while it is very practical and easy to maintain, it's not as visually pleasing as an animal plastic's cage and what not.

However, balls don't really display well anyway. They like to stay hidden.

To the OP, if you plan on a nice display animal, I suggest a Green Tree Python. They are gorgeous and will sit out proudly for all to gaze upon.



This is my rack:
(The door stays open unless I have guests over or my ferrets are out and about)