Nov 28, 2008 Report No：08-17
Expanding Choice in School Choice
- Atila AbdulkadirogluDepartment of Economics, Duke University
- Yeon-Koo CheDepartment of Economics, Columbia University
- Yosuke YasudaGRIPS
Truthful revelation of preferences has emerged as a desideratum
in the design of school choice programs. Gale-Shapley’s deferred acceptance
mechanism is strategy-proof for students but limits their ability to communicate
their preference intensities. This results in ex-ante inefficiency when ties
at school preferences are broken randomly. We propose a variant of deferred
acceptance mechanism which allows students to in
uence how they are treated
in ties. It maintains truthful revelation of ordinal preferences and supports a
greater scope of efficiency.
||Gale-Shapley's deferred acceptance algorithm, choice-augmented deferred acceptance, tie breaking, ex ante Pareto efficiency.