Angrist, Joshua D.; Battistin, Erich; Vuri, Daniela - Istituto per la Ricerca Valutativa sulle Politiche … - 2014
An Instrumental Variables (IV) identication strategy that exploits statutory class size caps shows signficant achievement gains in smaller classes in Italian primary schools. Gains from small classes are driven mainly by schools in Southern Italy, suggesting a substantial return to class size...