Instructional materials are among the key elements which contribute to effective foreign language teaching. Currently, although there is a great variety of materials for instructing languages, coursebooks still remain main materials in many language classes throughout the world. However, there are many reasons why language teachers should avoid the direct use of coursebooks and, instead, make their own materials. Based on these reasons, this paper discusses the use of teacher-made worksheets instead of coursebooks in EFL classes. In the study, qualitative data were collected through observations and open-ended questions. The participants consisted of eight EFL teachers and their students at a private school in Turkey. Findings of the study revealed both the process of materials development and teachers’ and students’ views about the use of teacher-made worksheets in their language classes.