There are some violations of church/state separation in public schools that are ambiguous or accidental. And then there are the instances when an administrator thinks he’s being paid to be a priest.
In Texas, Prosper High School Principal Greg Wright has not only preached at a See You at the Pole event, he’s also single-handedly forming a Christian club. Neither is legal and both show a complete disregard for students to handle their own religious activities. Teachers at the school have also led religious clubs and at least one staffer has religious iconography hanging in her office.