Our family supports these model policies to (at least help) protect our children from radical Marxists (or, from run-of-the-mill sexual deviants) using inappropriate sexual content to brainwash our children.
Not only do parents have a right to determine what their children are taught, but (most parents) are also in the best position to know what is best for their own children.
You must also make sure (through this document, and in other ways) that there are certain specific actions that every school MUST take to ensure sexually explicit materials are correctly identified and approved by parents first. Unless minimum standards are expressly stipulated and mandated (as opposed to providing mere examples or suggestions), many schools will ignore these model policies.
Our Prince William County Public Schools (and, particularly, it's Board) contain outspoken Marxists who won't follow any guidelines that contradict their own agenda. Therefore you must also contemplate penalties for those who ignore such guidance.