The purpose of this study was to explore the accuracy of the TeacherInsight online perceiver tool (Gallup University, 2007) in determining the effectiveness of high rated (n =14) and low rated (n =36) math and science new hire teachers summative appraisal ratings, completed graduate coursework, and retention status following one year and three years of single school district employment. Using the TeacherInsight tool to recognize qualities of an effective teacher, the study compared other factors that contribute to teacher effectiveness as it pertains to the teacher retention rate,...