Some new evidence on teacher and student competencies

Abstract

This paper reports statistical analysis of the determinants of average student performance on standardized examinations, and also the determinants of the extent to which students fail such examinations. Unlike most other cross-sectional studies of performance among school districts within one state, this study uses the quality of teachers, as measured by standardized test scores, as a determinant of performance. Perhaps the most striking empirical result of the study is the finding that a 1% increase in teacher quality, as measured by standardized test scores, is accompanied by a 5% decline in the rate of failure of students on standardized competency examinations. The corresponding impact on average or mean achievement of teacher quality is. by contrast, quite modest: 0.5%–0.8% per 1% improvement in teacher quality.