Evaluations of educational programs or interventions are typically conducted in nonrandomly selected samples of schools or districts. Recent research has shown that nonrandom site selection can yield biased impact estimates. To estimate the external validity bias from nonrandom site selection, we combine lists of school districts that were…

Reading Recovery is an example of a widely used early literacy intervention for struggling first-grade readers, with a research base demonstrating evidence of impact. With funding from the U.S. Department of Education's i3 program, researchers conducted a 4-year evaluation of the national scale-up of Reading Recovery. The evaluation included an…

The chronology, evaluation procedures, results, implications, and recommendations of a district-wide evaluation of reading instruction are described. The evaluation was conducted in 3l elementary schools in Eugene, Oregon, to determine: reading program effectiveness, qualities of effective programs, and methods to improve ineffective programs. (MH)

The evaluation of the reading programs in the Eugene, Oregon, public schools is described. Emphasis is placed on the eclectic approach to reading in the district prior to the evaluation and on the effect of using staff members as evaluators in their own district. (CTM)