This [0] that might interest you, then, if you think schools aren't involved in transitioning children.

Relevant quote:

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    Even though the policy states that “the goal in all cases is to strive for consensus between parents/guardians and student as to the application of this policy,” it adds that the decision to participate in the “gender transition plan” belongs to the student, and “does not require additional parent/guardian consent”—unless parental/guardian rights under the Family Educational Rights and Privacy Act (FERPA), or other applicable law, would be implicated.

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[0] https://www.ntd.com/parents-and-legal-guardians-excluded-fro...