2012
DOI: 10.1093/qje/qjs048
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Long-Term Effects of Class Size *

Abstract: This article evaluates the long-term effects of class size in primary school. We use rich data from Sweden and exploit variation in class size created by a maximum class size rule. Smaller classes in the last three years of primary school (age 10 to 13) are beneficial for cognitive and noncognitive ability at age 13, and improve achievement at age 16. Most important, we find that smaller classes have positive effects on completed education, wages, and earnings at age 27 to 42. The estimated wage effect is larg… Show more

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Cited by 222 publications
(190 citation statements)
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“…Our results contrast with the recent evidence from Sweden (Fredriksson et al, 2013(Fredriksson et al, , 2014) who find large negative and statistically significant effects from average class size in primary schools (grade 4-6) on earnings and, in some specifications, also for years of schooling. We investigate two possible explanations for these diverging results.…”
Section: Introductioncontrasting
confidence: 99%
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“…Our results contrast with the recent evidence from Sweden (Fredriksson et al, 2013(Fredriksson et al, , 2014) who find large negative and statistically significant effects from average class size in primary schools (grade 4-6) on earnings and, in some specifications, also for years of schooling. We investigate two possible explanations for these diverging results.…”
Section: Introductioncontrasting
confidence: 99%
“…Similarly, Chetty et al (2011) find that pupils that attended small classes in the STAR data are more likely to attend college, but do not find effects on earnings at age 27. Recently Fredriksson et al (2013Fredriksson et al ( , 2014, using Swedish data, were the first to report statistically significant effects on earnings and find that a 1 pupil decrease leads to 1.5 percentage point increase in earnings. A recent study using Norwegian data by Falch et al (2017) do not find any significant beneficial long-term effects from a middle school class size reduction, consistent with the absence of effects in Leuven et al (2008).…”
Section: Introductionmentioning
confidence: 99%
“…The existing literature reports the significance of small class sizes for primary, middle and high school students. 3,4 The literature attributes an improvement in cognitive and non-cognitive ability to relatively small class sizes. 4 It is, however, pointed out that reduction in class size needs to be coupled with the presence of a highly skilled instructor in order to observe measurable benefits in student performance.…”
Section: Introductionmentioning
confidence: 99%
“…3,4 The literature attributes an improvement in cognitive and non-cognitive ability to relatively small class sizes. 4 It is, however, pointed out that reduction in class size needs to be coupled with the presence of a highly skilled instructor in order to observe measurable benefits in student performance. 5 The discussion on class size can often be contentious, especially in the context of public education and student performance.…”
Section: Introductionmentioning
confidence: 99%
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