The purpose of this study was to investigate the applicability of Certificate of Teaching English to Speakers of Other Languages (CELTA) in the Turkish context and the necessity for Turkish teachers to obtain it. For this qualitative study, the data was collected by means of three tools: A CELTA survey, semi-structured interviews with teachers and the administrators and classroom observations in order to validate the data. The findings suggest that teachers are glad to take it; they admit that it contributed to them in many ways. However, they agree that it is nearly impossible to apply all the CELTA techniques in their classrooms. From the employers' perspectives, it can be inferred that CELTA is an efficient tool for professional development,but it is not must.