As a teacher myself, I have known many teachers who have been accused of assaulting a child (hitting, swearing at, etc) only for the child to eventually withdraw the accusation. By this time, the name of the teacher has been tarnished.
Why does this idea matter?
I have know good teachers to leave the profession due to false accusations. Children are well aware of their rights and when they are not happy with a teacher (for whatever reason) have used the 'assault' card to 'get them back'.