If you need it, here is another reason to keep your children out of public school: So that they are not spied on and singled out for their weight.
From CNS News:
The Chula Vista school district not only measures the academic progress of Marina Beltran’s second-grader, it also measures her son’s body fat.
Every two years, Antonio Beltran, like his classmates, steps on a scale. Trained district personnel also measure his height and then use the two figures to calculate his body mass index, an indicator of body fat.