I agree so much with your last paragraph. I don't think it'd be right for a faculty member to name the students from a same sex household the same way it's not right to list which kids are being raised by their grandparents, an uncle, an older sibling, etc, but there needs to be awareness and sensitivity that kids do not all come from nuclear families. My high school was pretty careful not to say "Parent/Teacher Night" and permission slips said "guardian" instead of "parent" signature, and they tried to be all-encompassing of people's families and situations. I think there's a right to privacy but a responsibility to be thoughtful instead of assuming everyone comes from the same situation.