A study examined the effect of teacher transitions and lesson content on lesson effectiveness as perceived by high school English students. A lesson was presented involving parallel sentence structure, and students were tested on comprehension of the material. Results indicate that teacher transitions significantly affected achievement but…

This study compared 46 teachers who were trained in and implemented mastery learning techniques with 50 similar teachers who were not trained to see if mastery learning changed the explanations they offered for their effectiveness. The results are set forth and implications for staff development are drawn. (Author/MT)