• Blocking pairs versus blocking students: Stability comparisons in school choice 

    Dogan, Battal; Ehlers, Lars (Université de Montréal. Département de sciences économiques., 2020-04)
    It is known that there are school choice problems without an efficient and stable assignment. We consider comparing assignments in terms of their stability by comparing their sets of blocking (student-school) pairs or comparing their sets of blocking ...
  • Strategy-proofness makes the difference: deferred-acceptance with responsive priorities 

    Ehlers, Lars; Klaus, Bettina (Université de Montréal. Département de sciences économiques., 2012-09)
    In college admissions and student placements at public schools, the admission decision can be thought of as assigning indivisible objects with capacity constraints to a set of students such that each student receives at most one object and monetary ...
  • Student-optimal interdistrict school choice : district-based versus school-based admissions 

    Ehlers, Lars (Université de Montréal. Département de sciences économiques, 2022)
    Hafalir, Kojima and Yenmez (2022) introduce a model of interdistrict school choice: each district consists of a set of schools and the district’s admission rule places applicants to the schools in the district. We show that any district’s admission ...