Abstract. The purpose of this study is to examine the compliance of Power Up 9 Course Book, Workbook and Teacher's Book, which is used as the ninth grade English course book at public secondary schools, with the 9th grade English curriculum according to teacher and specialist views. The study was carried out by qualitative research method using interview and document analysis techniques. The study group consists of 15 ninth grade English teachers and 5 field experts working at universities. Data were obtained through semi-structured interview form, analyzed through content analysis method and document analysis of Power Up 9 textbook set was carried out. Research results revealed that,the course book was partly sufficient in terms of its physical properties and the goals defined in the curriculum. However, it was found insufficient in many respects in terms of content, learning and teaching process and evaluation items of the curriculum. The study also revealed that the workbook in general supports the course book, is enjoyable to study and interesting; but the teacher’s book does not provide guidance to the teacher As a result, it has been suggested that the course book should be evaluated systematically for high efficiency in use.
Keywords: Course book, English curriculum