WHO’S INFLUENCING WHOM? A STUDY OF THE INFLUENCE OF THE CEO AND THE BOARD OF DIRECTORS ON ORGANIZATIONAL STRATEGY The more importance that parents attach to school effectiveness, the more likely we are to observe equilibria in which wealthy students attend more effective schools than do lower-income students. Moreover, if parental concern for peer group is not too large, the model predicts that this equilibrium effectiveness sorting will tend to be more complete in high-choice markets, those with many small school districts, than in markets with more centralized governance