Peter Fredriksson|Björn Öckert|Hessel Oosterbeek
Long-Term Effects of Class Size *
abstract article evaluates longterm effects class size primary school use rich data sweden exploit variation class size created maximum class size rule smaller classes last three years primary school age 10 13 beneficial cognitive noncognitive ability age 13 improve achievement age 16 important find smaller classes positive effects completed education wages earnings age 27 42 estimated wage effect large enough pass costbenefit test