Our public schools (k-12th) have been deteriorating for many years. When I was in school (graduated 1970) the US was at the top in most subjects or very near the top in the other subjects. We have continued to rate lower and lower relative to so many countries. Using the word "retarded" in this context shows just how I'll educated so many are. Of course sometimes it's just someone who isn't stupid, they are just a thoughtless jerk.