no weed didn't do this to them at all. it is definitely the family problems. because the whole i was in school i smoked since grade 7 and up and i was fine. i got A's B's C's and some D's but overall i did pretty damn good. people are just to ignorant to to know anything about weed. i bet the people saying that stuff have not yet once smoked it or even thought about the good side of weed. the only way to be truly intelligent about anything is to look at both sides of it. both the good and bad. if these people have obviously not looked at both sides or they wouldn't be saying that!