As a college student myself, I am well aware of the problem. However, the controversial problem, which is greatly presented, may be view from other perspectives. For instance, from a classical liberal perspective, student's decision for drinking and have unprotected sex carry no worth of discussion since in the first place, the students are well informed of the consequences that will immediately apply to each particular action. If the destiny for human is _____, then by different action, the chance either simply gets increased or decreased. If the girl choses to drink then study then it is their right to do so. America is founded on such fundamental ideas of "equality of opportunity".
But meanwhile, its important for viewers to recognize the documentary are a form of entertainment. Please do not equivalent one college girl to all college students. Indeed, in every school there are students who drinks or practice drugs irresponsibly, but notice there are also a great numbers of responsible students who uses alcohol as a tool for social interaction. And surely places education beyond anything at the time.
At last, I call viewers to respect such culture trend and especially cherish the courage from the mother. Like once the rise of popularity of cocaine happened in the U.S.. Alcohol may just count as another format. No need to be angry since in the first place, the culture has been formed this way. Be angry if and only if the next day you have the power and will to change not human nature but institution policies.