I agree, clo - parents and school should work together.
The problem is, too many parents abdicate their responsibility to teach their children what they want them to learn (in terms of moral issues) and want the school to do it. If what the school teaches is in conflict with what they want their children to learn, they insist that no students are taught the subject matter. And the children suffer, as NO ONE teaches them ANYTHING.

What is the point of rules that are not enforced?