Teaching English does not automatically mean teaching from a course book. Employing a course book is possibly the most accepted way of teaching a foreign language today, though. It is good to specify what the role of course books is or should be in the learning and teaching process. However, it is important to grasp that a course book is just sustenance, not a holy material. Course books must be at the service of teachers and students; they must not rule the teachers and the students. That’s to say, ELT course books have a big importance in language classrooms, though there are contradictory disputes about the actual role of these course books. This study evaluated ‘’Yes You Can’’, the ninth grade English course book for public schools, which was implemented in 2014 by the Ministry of Education, Turkey. The point of the study derives from the fact that it can affirm the strengths and weaknesses of the course book, and conclude whether it is applicable, or needs supplementation or modification for optimal learning. Accordingly, this study aims to identify the views of EFL teachers pertaining to the English course book for the 9th grade. A questionnaire for teachers was administered in high schools selected randomly from the Seyhan district of Adana. The data obtained were analyzed through SPSS, a Statistical Programme for Social Sciences. The analysis of the data shed significant light on the evaluation of the present course book through teachers’ views. In the first place, the responses by a total of seven out of thirty-eight criteria concerning the course book were disapproved while the rest of the items by a number of thirty-one were approved by teachers. That’s to say, teachers have designated an approval regarding the overall appreciation for ‘’Yes You Can’’, the ninth grade English course book.
Course book, Course book evaluation, Material, Materials evaluation, Evaluation