As an example, one of the schools I have been studying is too small to compete effectively in most sports, but participates with vigor each year in the state music contests.

The higher the social class of other students the higher any given student's achievement.

I'd propose that each central-city child should have an entitlement from the state to attend any school in the metropolitan area outside his own district - with per pupil funds going with him.

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 results indicate that heterogeneity of race and heterogeneity of family educational background can increase the achievement of children from weak educational backgrounds with no adverse effect on children from strong educational backgrounds.

Grades are almost completely relative, in effect ranking students relative to others in their class. Thus extra achievement by one student not only raises his position, but in effect lowers the position of others.

As an example, one of the schools I have been studying is too small to compete effectively in most sports, but participates with vigor each year in the state music contests.