Among many other concerning aspects of this policy, it undermines the rights and responsibilities of parents to protect and care for their children.
This policy seeks to place the state, in the form of school personnel, between parents and children. There are myriad challenges that children will go through, especially during adolescence, and parents should always be the most trusted confidants, coaches, allies, authorities, and advisors. Just as children will make mistakes in childhood, parents will make mistakes in parenting, but this is certainly no justification for blanket policies that wholesale supplant parents with agents of the state.
In the most general case, if a child and parent have a disagreement over an issue, that child and parent need to work through the issue. Policies like this one would provide an avenue whereby a child, unsatisfied with the resolution provided by a parent, could simply obtain the outcome in secret with the help of a state employee. Even for the most benign case this is extremely troubling. In the case where potentially irreversible and life-altering decisions are at stake, this is unacceptable.