A few typos to fix: "enjoys the fact" not the "fat", "you suggested; should", not "you suggested,should", and "to consider?", not "to consider."
I would take out the line about "I would hate to see it turned antagonistic because of misunderstanding or miscommunication." I think it's a little threatening to state it that way, and the context of "I love how collaborative this is" is clear enough.
Personally, I like "Thank you for all that you do for my child and for all of the children at xxx school," as a last line, instead of just "Thank you," but YMMV on that.
