“…Researchers define teaching effectiveness as teacher activities in teaching that achieve a certain level of success indicated by: the achievement of learning objectives, the use of learning media, the use of time following the lesson plan, the regulation of the learning environment, and the accuracy of evaluation [5,8,[25][26][27][28]. Knowledge management is a teacher's activity in identifying, creating, sharing, using, and managing knowledge systematically to achieve school goals with indications: the use of technology, organizing knowledge, motivating, growing inside, and providing knowledge resources [9,12,29,30]. Meanwhile, teamwork is teachers' group activity to achieve common school goals with indications: cooperation, common goals, communication, good relations, and trust [31][32][33].…”