I really don't see this being an issue. I am not 18 yet, but I do not think that having to use a restroom labeled "girls" rather than "women" is very demeaning when we are at high school. Most people don't turn 18 until senior year. And even then they are not all "adults" for that long before they graduate. And as many people pointed out, the issue of transgender bathroom is a much more article-worthy issue. There is more conflict on that than whether of not we should be calling high schools girls/boys or women/men.