Administration runs “investigations” without us knowing?

Today in class, I had a student called to admin. He’s a good kid, straight A student. As he was going he said “I hate going to the office, they always interrogate me”. Another straight A student says “me too. They have called me in because someone said you made fun of disabled people, I told them that didn’t happen but they still made me write a statement. And then they had asked me about another incident where someone said you said something but didn’t”. How would you guys feel? I know I’m a good teacher, but I’m strict and students don’t like that I am one of the only teachers who holds them accountable. So my question is, wouldn’t y’all feel targeted? Is there anything I can do legally? Like I don’t want to be accused of stuff I didn’t do just because a student is not getting an A in my class.

This is my last year here btw, can’t wait to turn in my resignation letter.