The Double-Edged Sword of Information: Revealed versus Hidden Lotteries in School Choice
In school choice, a lottery number is often used by the matching mechanism to break ties when there are more students who prefer the same school than the number of seats available. There has been growing theoretical and empirical interest in understanding the impact of revealing the lottery number to students. In practice, in recent years, the NYC Public Schools started revealing the lottery number to students to improve transparency. Theoretical findings from prior literature also suggest that revealing the lottery number strictly improves the number of matches under the deferred acceptance algorithm. However, these theoretical results are based on the over-simplifying assumption that al...
| Authors | Parinaz Naghizadeh, Jingyan Wang |
|---|---|
| Primary category | cs.GT |
| Published | 28 September 2026 |
| Last updated at source | 28 September 2026 |
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