Hmmm...I think that there is NOT enough information here to make an educated guess. There can be so many variant's that can figure in here...for example, the teacher could have been related to the child, or the parent(s) or, could have known the child's parent(s) well enough to feel comfortable in doing the child's hair without fearing backlash from the parent(s). If neither of the aforementioned scenarios apply, then the teacher should have gotten the (O.K.) from the child's parent(s) first before touching the childs hair.
Hmmm...I think that there is NOT enough information here to make an educated guess. There can be so many variant's that can figure in here...for example, the teacher could have been related to the child, or the parent(s) or, could have known the child's parent(s) well enough to feel comfortable in doing the child's hair without fearing backlash from the parent(s). If neither of the aforementioned scenarios apply, then the teacher should have gotten the (O.K.) from the child's parent(s) first before touching the childs hair.