I don't know if I missed an answer to this question.
Where and what school are you in?
I ask this because it sounds like you may still have a little time AND IF the school has a wood shop you may be able to get them to build you an enclosure? That would make it even more interesting for other students.

With the night drops unknown I would go the way of a RHP. You can get with the guys at Reptile Basics but you would need to know what you are going to use for an enclosure.
I am one to always recommend a rack BUT knowing that children don't always close things the way they should I wouldn't chance it LoL