Extensive practice and research in program evaluation have led to this eight-step process that a professional developer can use to determine a program's effectiveness and strengthen the program as it evolves. An unbiased, systematic process of evaluation can help justify putting resources into professional learning and make it easier to determine…

The multiplier strategy involves training selected teachers or supervisors, who subsequently act as turnkey trainers in their own schools or districts. Project SITE, which uses the turnkey strategy to train trainers in elementary mathematics and has been adopted by more than 250 schools, is described and evaluated. (MT)