Study links exposure to common pesticide with ADHD in boys
Girls are seen as the paradigm of student behavior in schools; this has been true for at least a generation. As fewer and fewer men are becoming elementary school teachers, because of the perverse and prejudicial belief that they must be pruriently interested in children, the elementary world is one of synoptic regard when it comes to gender and related behaviors.
I would often, in my years as an educational administrator, listen to women faculty complain that, if boys would only act like girls [or really like smaller versions of the women faculty], the school would be a better place. Some drug companies, physicians, and other health care providers have used this pretzel logic to create a multi-billion dollar industry.