I don't trust the BMI thing. There are just too many body types out there. I realize the issue is to deal with childhood obesity but I think there is too much lack of common sense in our schools to carry such a program out.
Two examples: I had a friend who was 6' 4" and really an "Amazon" type woman in regard to bone structure etc. She joined weight watchers (which I support btw) but their scale of appropriate weight for her was totally ridiculus and out of whack for her body type. Second: I have a nephew is looks perfectly normal in regard to weight and heighth. But you try to pick the kid up and he is as heavy as an anvil. I guess he is just really dense. And just for fun a third: It never fails that when I tell people what I weigh they say, "no way!". I've always downed myself because of my weight until finally a Dr. told me they don't consider me overweight...even though on their "scale" I don't fall in the weight range for my age etc.
I’m sure I don’t want BMI measured - I want military type physical training and grading based on performance. I think physical performance is more important that weight, BMI, etc.