When Bailey Webber interviewed people for her new documentary, The Student Body, she took a set of bathroom scales with her. And every person with whom she spoke, she asked, “Would you be willing to step on the scales so we can get your BMI?” To a person, they balked. Most ultimately refused, though some reluctantly agreed. A lot of kids in our schools don’t get the choice to decline. And then a letter arrives notifying them that they are too skinny or too fat. In the ground-breaking and excellently produced film she made with her dad, Bailey, a young journalist, tackles the heated topic of childhood obesity and misguided efforts to solve our national childhood obesity epidemic. And just what are those misguided efforts? Lawmakers in dozens of states have passed mandates requiring schools to perform body mass index (BMI) tests on students and then send letters stating their results….