The educational resources provided by a child's fellow students are more important for his achievement than are the resources provided by the school board.
Schools are successful only insofar as they reduce the dependence of a child's opportunities upon his social origins.
Particular individuals who might never consider dropping out if they were in a different high school might decide to drop out if they attended a school where many boys and girls did so.
The higher the social class of other students the higher any given student's achievement.