And is that mandated by statute? Or was it by invitation?
Is your argument that it isn't a 4th amendment violation if a governing body says it's not?
Have you heard of the Nuremberg defense? Or appeal to authority?
I'm pretty sure Santa Fe, NM high school students are entitled to attend prom without being groped.
Is your answer that they should all attend private school? Or would you grope them there as well?
It doesn't matter. A foot in the door is a foot in the door.