There are various ways that school principals carry out teaching supervision, both autocratically and democratically. This research aims to see what obstacles there are in school principals' teaching supervision. The method used in this research is the library research method related to journals regarding the teaching supervision of school principals. From the results of the discussion it is known that the obstacles in the principal's teaching supervision involve four factors, namely the principal (time, lack of skills and knowledge, stress and personal characteristics of the principal), teachers (teacher attitudes and motivation), students and equipment and facilities.

Al Ramaiah, (1995). Supervision; One Load & Ease. Kuala Lumpur: Faculty of Education, University of Malaya.

Al Ramaiah, (1999). Educational Leadership: Current Challenges. Petaling Jaya : IBS Books Sdn. Bhd.

Anderson, Coralyn S. (1987). Instructional Leadership Behavior in High School Principals, Assistant Principals and Heads of Departments: High School Journal. 70 (2 ): 115 - 123.

Boardman, W. Charles, Dougless R. Harl and Bent K. Rudyard. (1953). Democratic Oversight in Secondary Schools. Massachusetts: Houghton Mifflin Company

Broadwell, Martin M. (1975). Supervisors and problems. Yogyakarta: Kanisius Foundation Publishing.

Ginsberg, R. (1988). A Feasible Goal... An Impossible Reality: The Principal as Instructional Leader. NASSP Bulletin, Vol. 72 (507).p. 76-82.

Glickman, C.D. (2007). Supervision and instructional leadership: A developmental approach (7th ed.). Boston: Pearson International.

Husain Mahmood, (1997). Leadership and School Effectiveness. Kuala Lumpur: Language & Library Council.

Ibrahim Mamat, (1993). School Leadership. Kuala Lumpur : Kumpulan Budiman Sdn. Bhd.

Ismail Abu Talib, (1986). School Supervision - One Hope. Paper presented at the Seminar on Increasing the Professionalism of Melaka Middle School Principals, Melaka.

Mahmud . (2011). Educational Research Methods . Bandung: Pustaka Setia

Sarasson, S. (1971). School Culture and the Problem of Change. Boston : Allyn and Bacon.

Sergiovanni, T. J. (1983). Supervision: A Human Perspective. New York: McGraw Hill Book Company.

Sergiovanni, T. J. (1995). Supervision : Reflective Perspective. Boston : Allyn & Bacon.

Wellisch, J. B. (1978). School Management and Organization. Sociology of Education. 51 : p. 211-226.

Wideen, M. F. & Ian Andrews, (1984). Implications for practice. In David Hopkins & M. Wideen (Eds) Alternative Perspectives on School Improvement. New York: Falmer Press.