Skip Navigation
Technical Methods Report: Do Typical RCTs of Education Interventions Have Sufficient Statistical Power for Linking Impacts on Teacher Practice and Student Achievement Outcomes?

NCEE 2009-4065
October 2009

Tables

Table 5.1 MDE Values for Student Gain Scores and a Teacher Practice Mediating Outcome
Table 5.2 Total Number of Schools Required to Detect Teacher Practice-Achievement Associations Assuming the Mediator Explains 10 Percent of the Variation in Classroom Effects, by Power Level
Table 5.3 Total Number of Schools Required to Detect Teacher Practice-Achievement Associations Assuming the Mediator Explains 20 Percent of the Variation in Classroom Effects, by Power Level
Table 5.4 Total Number of Schools Required to Detect Teacher Practice-Achievement Associations Assuming the Mediator Explains 5 Percent of the Variation in Classroom Effects, by Power Level