LÖVE

Your school computers does not have any persistent data? Most school computers I have used have a network login as well as a network drive. So for example there might be a folder somewhere with your username on it that is persistent and shared between all computers. Its the same thing they would do for teachers. But if there isn't persistent storage you could just buy the cheapest thumb drive in bulk and just put the basics on it and distribute the thumb drives with club members. You could also just talk to your IT department at your school. They would probably help you out. Also you can use a portable copy of notepad++ or sublime or maybe atom(not sure if they have a portable copy)