“…Principal leadership also influences school environment and instructional organization related to students' achievement (Dutta & Sahney, 2016;Mestry, Moonsammy-Koopasammy, & Schmidt, 2014). Effective leadership of principal occurs when he observes and discusses students' learning progress with teachers (Burroughs, Gardner, Lee, Guo, Touitou, Jansen, & Schmidt, 2019;Ismail, Don, Husin, & Khalid, 2018;Usman, 2015). Furthermore, as instructional leadership, principal should be able to motivate teachers to work together to improve the quality of instruction (Harris, Jones, Cheah, Devadason, & Adams, 2017;Kalman & Arslan, 2016).…”