Hang on there bucko. Let's get just a little honest with our descriptions here. Getting sexually excited by someone or something is not the same as actually doing something about it.
The homosexual lifstyle goes way beyong being "sexually excited by some members of the same sex". Hell, I wouldn't approve of heterosexuals living the same lifstyle as homosexuals.
The last thing I need to know is the sexual proclivities of my students or my employees. Assuming their behavior is not thrown in my face, demanding not only my tolerance but my acceptance of it, I see no reason to dismiss anyone.
That's fine, but the two girls expelled in this case weren't expelled for a reckless lifestyle. Your emphasis on that is valid, but misplaced in this (and many) situations.