Improving Teaching Through Lesson Study.

A strong need exists for teachers to experience sustained, high-quality professional development in order to improve student learning and teacher instruction. However, teacher professional development efforts are often criticized by educators for their lack of continuity and ability to produce effective change in teacher practice and student learning (Loucks-Horsley, Hewson, Love, & Stiles, 1998). After examining the findings of The Third International Mathematics and Science Study (TIMSS), Stigler and Hiebert (1999) conclude that "American teachers aren't incompetent, but the methods they use are severely limited, and American teaching has no system in place for getting better. It is teaching, not teachers, that must be changed" (p. 10). Many educational scholars believe that a critical component of any educational reform effort should be to provide teachers with opportunities and appropriate support structures that encourage the critical work of on-going improvement of pedagogical practice (Darling-Hammond & McLaughlin, 1995; Garet, Porter, Desimone, Birman, & Yoon, 2001; Sparks & Hirsh, 1997). This article presents a professional development initiative developed by a university-school partner-ship based on the Japanese lesson-study model de-scribed by Stigler and Hiebert (1999) in The Teaching Gap. Lesson study (jugyoukenkyu), an inquiry model of teacher professional development, is used extensively throughout Japan and has begun to capture the attention of the American educational community as a potential strategy for enhancing teacher professional development in America (See Lewis & Tsuchida, 1998; Lewis, 2000; Stigler & Hiebert, 1998; Yoshida, 1999). As we seek under-standing of what is required of professional-development experiences that leads to real improvement in how teachers teach, examining the process of lesson study may provide valuable insight. The purpose of this study is to describe the effects of the lesson study process on six upper-elementary teachers from a city school system in the southeastern United States. The study will specifically address the following research questions: (a) How do these teachers perceive lesson study as a professional development process? and (b) How will engaging in lesson study affect these teachers' instruction? The findings of the study are important in determining if the model is effective in helping teachers to examine and improve their practice. "To date, the number of US sites where lesson study is successful (judged by teachers' accounts of its usefulness in improving instruction) is still very small, and it is likely these sites had important supporting conditions in place for lesson study" (Lewis, 2002a, p. 33). Indeed, there is a need for research that examines the supporting conditions that enable lesson study to succeed at particular sites (Lewis, 2002a); therefore, this issue will also be examined in this report.