Randomized experiments are often considered the strongest designs to study the impact of educational interventions. Perhaps the most prevalent class of designs used in large scale education experiments is the cluster randomized design in which entire schools are assigned to treatments. In cluster randomized trials (CRTs) that assign schools to…

Used meta-analysis of 60 studies to investigate the direction and magnitude of the relationships between a variety of school inputs and student achievement. Analysis finds a broad range of resources to be positively related to academic achievement and further suggests that moderate increases in spending may be associated with significant increases…

Supports the findings of a meta-analysis that demonstrates that student achievement is related to the availability of resources, disagreeing with criticisms of method and sample selection made by E. Hanushek (1996). (SLD)

Replies to E. A. Hanushek's questioning of the validity of meta-analysis as used by the authors in analyzing resource allocation and its effects on improving student academic performance. Statistical analysis procedures are examined. (GLR)

Presents reanalysis of data from earlier reviews, particularly those by Hanushek (1981, 1986, 1989, 1991), on relationship between educational resource input and school outcomes when controlling for student characteristics such as socioeconomic status. Using different synthesis methods, analysis shows a positive relationship between resources and…