Demir, Yeliz YazıcıHayta, Pelin Hayta2025-03-232025-03-2320212148-2314https://doi.org/10.46778/goputeb.789472https://search.trdizin.gov.tr/tr/yayin/detay/1138375https://hdl.handle.net/11486/3239This study aims to evaluate an English textbook in a private school example in Sinop. Although private schools and public schools follow the same curriculum, there are differences in the textbook preference. In this study, as an external evaluation, the English textbook was examined in terms of the design elements; and, as an internal evaluation, the book was examined in terms of the instructional elements. The research design was qualitative and the process was carried out by two different researchers. Results showed that although the textbook was found appropriate and effective based on the external evaluation: graphic design and print quality; the presentation of the four language skills in the textbook was poor. Reading skill was the most dominant skill presented, and writing skill was the least presented skill in the textbook. Therefore, the textbook needed supportive material to present other skills effectively. It is concluded that the textbook in this study is not suitable for teaching four language skills effectively and is not suitable for the purposes of the English language content as defined by the Ministry of Education.eninfo:eu-repo/semantics/openAccessEğitimEğitim AraştırmalarıDil ve Dil BilimArticle202116173310.46778/goputeb.7894721138375