Beginning with the 2015-2016 academic year in Turkey, school principals were given the responsibility of instructional supervisory authority. The purpose of this study is to reveal the level of instructional supervision exhibited by the school principals according to the perceptions of teachers and to examine these perceptions in terms of various variables. In this context, 1237 teachers working in primary, middle and high schools in Balikesir and Bursa provinces were included in the study. In the study, a survey was used to reveal the current situation regarding instructional supervision exhibited by the school principals. The results of the study showed that the instructional supervision exhibited by the school principals occurred at a low frequency. Within the scope of the study, it is recommended that the current practice regarding the instructional supervision should be provided in a way that will recognize the teachers in the process of providing feedback to teaching and teachers and benefit from these teachers in this process.