Amazing classroom and school. I see a very interesting and beautiful blend of Montessori, Waldorf (Rudolf Steiner), Traditional, and Reggio Emilia. Love the whimsical feel. Beautiful lighting and fixtures. Never cluttered, many shelves display only one book, puzzle, or item :)
I do quite like the "all seasons" tree . This was my first initial thought for a logo (just not a painted style like this) but I'm pretty sure it's been done more than once so it'd need some work to make it original.