This researcher discusses what he has learned about the field of program evaluation and makes three observations: (1) Testing does not define key objectives in evaluation. (2) Politics influences what clients want to know. (3) Case studies are necessary for epistemological reasons. (LMO)

Argues teachers must be able to correctly interpret and evaluate research design and results to effectively use research to improve instruction. Offers five guidelines for teachers to consider before changing teaching methods in response to research results. Favors longitudinal and cross-sectional studies for best long-term results from…