There is no reason why chocolate milk can’t be every bit as nutritious (if not more so) than 2%. It is simply that in lib think if the kids like it then it must be bad for them.
It is not only good, it is good for you. I drink it after hard bicycle rides.
http://www.webmd.com/fitness-exercise/news/20110701/drinking-chocolate-milk-may-help-your-workout