Earlier quoted context omitted.
Minors deserve no privacy? Is that what you're saying?
If you're talking about teenagers, I would say there's valid debate to be had. Minors, hell no. There's no debate. Parents are entitled to know—I'd personally go further and say a responsibility to know—what's going on in their life.
Parents don't have an inherent right to know every single thing in a child's life. By that token, if a child is gay, and their parents are rabid anti-gay bigots, they still have a "right" to know whether their child is seeking out information relevant to LGBT teens. I'm sorry, but I wholeheartedly reject that premise.