The Fourth Amendment is often cited in cases of this kind -- it has been interpreted in modern times as assuring some protections against unreasonable or unjustified surveillance.
He's talking about the fact they are able to track where the students are "roughly" in the school, and that the RFID badges hold some personal information in them. To which, I'm not sure what kind of personally identifying information is on them other than a UUID. All speculation and snake oil
Yes and yes. I see the issue she's having with the RFID but I also don't understand why she is having such a problem. Her phone tracks her, facebook tracks her, google, etc... it's a problem yes, but I can't do anything about it other than complain.
I think the family just wanted to get a quick window of fame and be able to tell people "Ya, we forced the HS to get rid of those RFIDs."