Extracurricular (DIR. Ray Xue) As the Canadian pop-punk band Sum 41 once sang, “motivation, such an aggravation.”  That seemed to be Ray Xue’s complaint as well when he was directing Extracurricular, which is the only way to explain why anything in this film happened.  Long time readers may recognize the number one rule of TAD: if a film is having its world premiere here, it will be terrible.  This is not a knock against any of…