Hi Jason, good work getting funding. My suggestion is hinges , dry erase boards (with backing panel strong enuff for hinge to fasten to wall) , and a variety of high saturation bright colors. plus simple organic room colors.
Its function first. My sense of it is.. the children will respond to an ever changing room. with 5-6 dry erase boards set on the wall. The dry erase boards are prepared as differentially colored on its reverse side. So lets say hour 1 is languages: gerunds, adverbs, conjugations etc ( board 1 is bright magenta on its rear side). ;; hour 2 comes along and the kids are focused on the material on board 2.. (which is a bright royal blue on its backing) , .As each subject ends , the board is flipped over to show a color and the kids index their memory to (i prospect ) more vividly reinforce photographic memory.. Once you choose your medium intensity attention colors, then you can decide the tone of the room. I would choose a light grey to make it feel spacious and then alter the texture. with dark grey and black-brown. almost giving the wall a cedar forest sort of floor to ceiling uneven striping.
https://www.youtube.com/watch?v=gRrOMUeprqs
https://www.youtube.com/watch?v=DzdwUoR7R_k
A high schooler or college art student into metal/ alt rock and supplied with paint could do the custom job for free or portfolio credit/pics. #Immersion is the key. The dry erase boards can't be very high attention colors otherwise you'd distract the kids from what you're saying to them on topic. That nitty gritty is for you to ponder. hope it helps. If it were up to me I'd get rid of the desks and get couches ; make the kids copy notes on notepad and clipboard. Desks let the kids sulk into boredom on presumption its hard to see the kids in the back. When they're engaged and visible, they become more of the class more of the time.
Q