Rules/Legalities for installing code combat on a network

I would like to install code combat on my school network for my students or o a sub-domain; is that legal. What are the rules/legalities for installing this open source software?


From what I can see you can setup the server but perhaps just not use the levels. So if you made customer levels then it would most likely be fine. I don’t even know if the levels would be a part of the software download.