The most important thing I could recommend is not using the glass tank, you'll be sorry down the road. Rather than spend money on decorations, put it towards a good reptile style display cage (AP, reptile basics, etc), with locks on it, especially for a classroom. Your BP will be happier in the long run with a nice stable environment with proper temps and humidity, and those are tough to obtain in a glass tank. How are you going to be checking the temps and spraying for humidity on the weekends if the cage is going to be in a school? The heat lamps are a nightmare, I used to use one and was always afraid of it falling and catching something on fire, and they eat up every ounce of humidity. Good luck.