I keep most things private. I give lots of vague answers like "old enough" or "that's not science related". When they guess anything I always say "yeah about that" or "maybe, maybe not", whether it's true or not. What they do know is- -my first name (here kids call teachers by first names, not my -favorite, but ya know.. when in Rome) -where I'm from in the USA -that I was not necessarily a good student while in school -where I go on vacations -that I don't have kids -that I have a dog -that I was a swimmer -movies I like and dislike It's really like superficial stuff and that's about it. Some kids do know more because I see them in the dog park, so they know I have a boyfriend. Otherwise, I don't share much. My name on facebook is different than my real name so they can't find me.