TY  - RPRT
        AU  - West, Martin R.
AU  - Woessmann, Ludger
        TI  - Which School Systems Sort Weaker Students into Smaller Classes? International Evidence
        PY  - 2003/Mar/
        PB  - Institute of Labor Economics (IZA)
        CY  - Bonn
        T2  - IZA Discussion Paper
        IS  - 744
        UR  - https://www.iza.org/index.php/publications/dp744
        AB  - We examine whether the sorting of differently achieving students into differently sized
classes results in a regressive or compensatory pattern of class sizes for a sample of
national school systems. Sorting effects are identified by subtracting the causal effect of class
size on performance from their total correlation. Our empirical results indicate substantial
compensatory sorting within and especially between schools in many countries. Only the
United States, a country with decentralized education finance and considerable residential
mobility, exhibits regressive between-school sorting. Between-school sorting is more
compensatory in systems with ability tracking. Within-school sorting is more compensatory
when administrators rather than teachers assign students to classrooms.
        KW  - class size
KW  - educational achievement
KW  - student sorting
        ER  -