I encourage you to go for all of your dreams and think big... If you truly want to create a natural building school.. look into 501-c3 or c4 class that you could register a "part of your property to the school and be completely tax free. the big thing is that with these gov. filings no one person can solely benefit from the organization by living on the property, you get out of that by registering the mission on a piece of the property, which can then be public/school facility. OR you can just say that the natural living is your religious freedom and file that way, lots of others hoops, and this is a big research project.. Many public libraries have grant sections and people that are quite knowledged with this info. You could also go the way of private grants for projects like this... there are incentive programs for offset costs such as solar, wind now. Beautiful vision and building and wishing you all the abundance and clarity to reach your intention! Search for others that have done this and seek some solid advice..