We still haven't gotten clarification of where the equipment and supplies came from. After a two minute Google search I found the biggest problem you have. By becoming a group with the school you entered a contract with the school as a School Activity Fund group. Per this
document you have absolutely no recourse here whatsoever.
Specifically - "5. Materials and equipment purchased by student activity funds become District property. "
I'm sorry to say this, but the district is following their guidelines to a T. Taking everything away and shutting down an educational group is a terrible way for a school to work, but maybe someone on the board of trustees didn't like something you were doing as a group. If that is the kind of environment you were in, I would consider you lucky to be forced out of it. Sounds like it was a toxic relationship from the way communication was/is handled and general treatment was/is addressed.
It sounds like you were extremely successful in that environment, there is no telling what you are capable of once you are free of that mess.
Our offer still stands if you need a hand, distance or not we'd hate to see another young team suffer at someone else's doing. Just let me know what you might need and we can see if we can work out a care package.