Learning in primary > Class size (eLP) > Krueger 1999

Detailed Information

Country
Country: United States
GDP per capita
35.108
Context details
Inner-city, suburban, urban, and rural schools, large enough to accommodate at least 3 classes per grade, in Tennessee
Age
Kindergarten
Implementation year
1985
Implementer
Government
Duration (months)
16
Cost
Reducing class size by one-third increases costs per student by about $2151 per year.
Intervention details
Class size reduction from 25 to 20 students (computed from the original estimate of reducing the class size from 23.5 to 15); 80 schools participated
Evaluation design
Randomized evaluation
Cluster definition
Class
Sample Outcome Test Source Table Observations Statistics on Effects
Grade 3 Combined SAT 5 6109 Coeff: 5.00; SE: 1.19; Effect Size: 19.00
Grade K Combined SAT 5 5861 Coeff: 5.37; SE: 1.19; Effect Size: 20.00
Grade 2 Combined SAT 5 5950 Coeff: 5.79; SE: 1.23; Effect Size: 22.00
Grade 1 Combined SAT 5 6452 Coeff: 7.40; SE: 1.18; Effect Size: 28.00