.RACE AND GENDER DIHERENCES EN EDUCATIONAL ATTAINMENT, HILD OF STUDY, AND [NCREMENTS TO EARNINGS (EVIDENCE FROM UNIVERSITY OF ILLINOIS TRACER STUDIES AND NATIONWIDE EARNINGS DATA) Even at the upper extreme of the estimated confidence intervals, the SAT gap between more- and less-desirable schools is not meaningfully larger in markets with decentralized governance than in those with less Tiebout choice.