People, humans cannot identify nor stereotype the diversity and variety that a public education system entails. It is irrelevant.
Presumably, every school (even Quartz Hill) will contain every unique array of personality and work ethic, there is no say what a '...typical Quartz Hill High School student' is like as every individual is divergent and unconventional in their own way. Although there will be times of sluggish and inactive work in every individual, the students all prevail in triumph on way or another, in their own terms, in their own preference, who they are. This is not a collectivist chauvinist predicament. This is diversity.