Not sure it would help but maybe letting them know ahead of time would make principals like this guy think twice about such "no big deal" strip searches.
I set the rules down with the school day of back to school night . However when the boys & my oldest daughter were in the middle & high schools I told them...never hit 1st, if you have to go to the office be polite & say call my mother asap. I have many years of dealing with the schools & teens. If I had a daughter in high school I would tell her don’t do anything they tell you about searches or urine testing. I am so sick of the schools. When they saw a knife or a razor blade the police should have been called IMHO. I would rather deal with them then the school.