THE USE OF INTENAL AUDIT FINDINGS IN GOVERNMENTAL ORGANIZATION : AN EXPERIMENTAL STUDY In modeling the effects of parental preferences on equilibrium outcomes under Tiebout choice, it is important to account for two key issues that do not arise under choice programs like vouchers. The first is that residential choice rations access to highlydemanded schools by willingness-to-pay for local As a result, both schools and districts in high-choice markets (those with many competing school districts) are more stratified than in low-choice markets