The type of staff development necessary to improve student achievement is not the type of in-service where elementary teachers just attend a workshop to learn a specific activity to be used when teaching a particular concept. Rather, a comprehensive instructional strategy is the one designed to enhance student comprehension and mastery for increased student performance, such as higher-order questioning that heightens the significance and expands the learning potential of all activities and concepts. Here, Caulfield-Sloan and Ruzicka explore the effect of teacher's staff development in the use of higher-order questioning strategies. (Contains 8 tables and 2 figures.)