When dealing with students and confidentiality, I generally ask myself, "If I were his/her parent(s), would I want to know?" If yes, then parents are put in the loop with what is going on with their kid.
Apparently this is not the case in the state of Washington and its public high schools. In fact, it's worse than that - they are actually helping kids keep their parents in the dark. Click here to read the story but be prepared to be shocked.
Update: Here is the link to the local news coverage in Seattle.