Learning in primary > Class size (eLP) > Jepsen 2009

Detailed Information

Country
Country: United States
GDP per capita
44.518
Context details
Public elementary schools in California, except for charter schools and alternative schools (such as special education schools)
Age
Grades 2-4
Implementation year
1997
Implementer
Government
Duration (months)
N/A
Cost
N/A
Intervention details
Class size reduction from 25 to 20 students (computed from the original estimate of reducing the class size from 30 to 20)
Evaluation design
Differences-in-differences
Cluster definition
School
Sample Outcome Test Source Table Observations Statistics on Effects
Grade 4 Language SAT 3 65511 Coeff: 0.35; t-statistic: 5.00
Grade 3 Language SAT 3 65511 Coeff: 0.37; t-statistic: 5.93
Grade 4 Math SAT 3 65511 Coeff: 0.56; t-statistic: 6.54
Grade 2 Language SAT 3 65511 Coeff: 0.63; t-statistic: 4.76
Grade 2 Math SAT 3 65511 Coeff: 0.72; t-statistic: 4.11
Grade 3 Math SAT 3 65511 Coeff: 0.96; t-statistic: 11.45