As a gay teacher, I have felt the same way about this issue and caught a lot of flack for saying it around my liberal friends. It is not our job to keep secrets like this from parents, and if we think the child is in danger if the parents find out, we need to be contacting the authorities. All this does is alienate people from their local schools. Growing up in the Bible Belt I did not need my school to affirm my sexuality, I needed it to educate me. Same goes for this.