Research shows that the most important factor leading to student achievement is effective teachers. The most influential factor is the teacher, while curricula, decreased class size, district support, family and community engagement all lead to school success and student achievement. To schools seeking to improve their results, selecting effective teachers is of crucial importance. Students who had been put three years in a row with highly effective teachers substantially outperformed comparable students on a mathematics evaluation. The quality of teachers has a lasting effect on student learning.
The student who has only one year of an excellent teacher will stay ahead of her peers for at least next few years. Sadly, the opposite is also true: if a student has an incompetent teacher, it may not be possible to fully mitigate the negative effect on his performance for up to three years. A study of third-grade teachers showed that teacher students rated approximately 30 to 40 scale-score points higher than expected in English and Mathematics in the top performance quartile while teaching students in the bottom quartile scored approximately 24 to 32 points lower than expected in those studies. It’s evident that the teacher is the common denominator of school success and student achievement. It is therefore important that schools are in a position to find effective teachers during the hiring process. Effective teachers show those competencies and qualifications. These include verbal ability, pedagogical coursework, knowledge of students with special needs, qualification of teachers, and knowledge of the specific subjects to be taught. Personal traits such as an optimistic and compassionate disposition, student fairness and appreciation, excitement, commitment, and reflective teaching contribute to the success of these teachers in the classroom.
Similarly important are the skills of coordinating classrooms and handling classrooms. Instructional preparation, allocating time to academics, keeping students involved, using acceptable teaching strategies, pacing instruction appropriately, challenging strategies, tracking performance and differentiating learning for individual students are all important features of an effective teacher. A growing body of research shows that schools can make a difference, and a substantial portion of that difference is due to teachers, given the conventional wisdom that school inputs make no difference in student learning. Nowadays, politicians, educational institutions, parents and other educational stakeholders have often used standard testing as a measure of educational performance rather than student disposition, dropout rate, and attendance rate. Parents are likely to want to send their children to school with a good performance grade, as well as college is considering accepting high school students. On the other hand, the government usually uses it to measure their educational performance plan by using student achievement as a goal to reach and give to their voter in order to vote for them in their campaign. Several experiments are performed to examine the determinant factor affecting this aspect, in order to increase student achievement. Instead of vast and varied research, the variable influencing student achievement can usually be divided into some variables as family background, school resources, and outside school and family climate.
The quality of teachers is key to student performance. What kind of teacher trait increases student content is the most questions that emerge on the characteristic of an instructor. Nonetheless, the method for evaluating teacher quality in providing classroom teaching is still being debated among the researcher.
According to some research, the teacher score test believed that the output of each teacher can be predicted in delivering student achievement. A proper teacher appraisal test can be used as a method for predicting student achievement.