The aim of this study is to develop a scale which will describe how education supervisors' behaviours are perceived. Four separate studies have been conducted in order to develop the scale. In the first study the scale that was developed is applied to a working group consisting of 704 teachers. The factor structure of the scale is examined by conducting exploratory and confirmatory factor analyses using the obtained data. At the end of the analyses, it is identified that the scale has a four-factor structure. The criterion-related validity of the scale is the focus of the second study. The third study focuses on whether or not the factor structure of the scale is valid on the different samples. The fourth study concerns the reliability of the scale. The Scale for Perception of Education Supervisors' Behaviours (SPESB) is a tool which consists of four dimensions, namely directive, guide, co-operative and functionless. The obtained data have revealed that this intended tool has reliability and validity. (Contains 2 tables.)