Each classroom also received a packet to help guide them through the challenge! I found HUGE pumpkins at a local market and I got one for each classroom. I also provided metal trays (the kind for a turkey) from the dollar store for each room to help reduce the mess!
Here is the link to the packet! It only costs $2.50 for the 10 page packet. Why not see if your school would be interested in doing their own school-wide challenge?