Lusy Tunik Muharlisiani, Nurul Istiq
This study aims to identify and analyze teachers' professionalism, performance, and productivity in improving school student achievement. It can be concluded from this study, which was done at Islamic Senior High School, in Lamongan. The researcher used a quantitative approach with descriptive and inferential methods. The results of this study show that there is a relationship between teacher professionalism and student achievement in school (r=0.772), a relationship between teacher performance and student achievement at school (r=0.717), and between teacher productivity and student achievement in school (r=0.851 Therefore, it can be concluded that teachers' professionalism, performance, and work productivity have a strong and significant relationship to increase student achievement (R=0.846), where high. Teachers' professionalism, performance, and work productivity can cause low student achievement.