You might consider donating your beautiful piano to the Educational Foundation in your community. Most foundations of this type are a 501 (c) (3) approved non profit organization. The foundation could sell your piano and use the proceeds to fund scholarships, etc. As a former high school administrator, I would hesitate to place your beautiful grand piano in a high school music program out of fear for the piano itself. Hopefully the school you are considering has an appreciation for such a fine and beautiful instrument.