A Simple Method for School Choice Lotteries

Published 7 May 2026 in cs.GT and econ.TH | (2605.06721v1)

Abstract: This note proposes a simple polynomial-time method for constructing an ex ante stable school-choice lottery satisfying equal treatment of equals. The method applies the ETE reassignment to a constrained efficient stable matching and yields a lottery that is not ordinally dominated by any other ex ante stable lottery.

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Yasunori Okumura

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