Working paper 1. NOV 2012 Daycare, school and education Daycare, school and education The effect of class size on student achievement Authors: Trine FilgesChristoffer S. Sonne-SchmidtTine NielsenAnne-Marie Klint Jørgensen Daycare, school and education Daycare, school and education Authors Trine FilgesChristoffer S. Sonne-SchmidtTine NielsenAnne-Marie Klint Jørgensen