AbstractTeachers are important people in the world of education. Teachers who have a high idealism towards teaching, students and society will display personal, interpersonal, professional, intellectual characteristics and skills in teaching and learning. Therefore, a teacher must play an important role in the learning process of the student in order to change their behavior and create a human being that will become a state asset. The goal of the Secondary School Curriculum (KBSM) can be achieved if a teacher is able to equip themselves with skills, knowledge, and positive attitudes. In this regard, the purpose of this article is to discuss the importance of content knowledge among educators to improve their teaching practices effectively. This knowledge is widely studied because such knowledge is considered as one of faculty must have by each educator. Based on the results of the study, there are some of the most important factors that contribute to a high level of content knowledge. The lite.....