I hate the idea, at least at high school. Oh, each year I enjoy talking to parents--it's usually the parents of the good kids that show up--but to be honest, I'd rather be home with my own kid.
Tonight something good for me came out of it. Two former students came to visit; their mom now works at the school. I had the older one her senior year, my first year at the school, and this is my 10th year. Anyway, she's temporarily a substitute teacher, and now she'll be covering my classes on May 20th :-)