The letter is long gone, but thanks for the comments.
I ended up modifying the statement about the police to say that there is an opportunity cost to the community to have police officers spending time in schools rather than concentrating on law enforcement. This is an important reason why I am opposed to the program, besides it generally being a joke.
The principal is now majorly intimidated by us.

We are now campaigning to get the school's homework policy changed. It started by dh calling dd's teacher and asking him why he assigns so much homework. The teacher floundered around and mumbled something about district policy. Dh then asked him why he thinks it does any good, and had he ever seen any research to that effect. The teacher mumbled something about talking to the principal.
The principal called me and it was clear she'd done a quick ERIC search before she called me back. She timidly admitted that there was very little she could find to support homework for elementary students, and maybe we should all meet with the district curriculum people. Poor woman, I apologized for doing my best to be a thorn in her side.
