Sexual contact was not mentioned by the OP though?(Original post by georgiaswift)
Yep, I completely agree. A pat on the head isn't sexual at all, and trying to get a teacher sacked for that is ridiculous. If the op is really that uncomfortable then they could talk to the teacher and explain that they don't like physical contact.
I think that if someone is responsible for another person (teacher, guardian etc) then sexual contact is inappropriate, even if they are over 18.
Cambridge at number one