In countries where textbooks are considered as the main source of teaching/learning process, textbook evaluation seems to be inevitable and necessary. The current study aimed at evaluating the new English textbook entitled “Vision 1”, developed for the Iranian first grade high school students. To achieve this goal, two groups of participants took part in the study. They consisted of 30 teachers teaching this book in Baghmalek in Khuzestan province and 70 students studying in the first grade high school in the city mentioned. The quantitative data were collected through two questionnaires. The questionnaires were designed to evaluate the book in terms of seven criteria namely, practical considerations, layout and design, activities, skills, language type, subject and content and cultural considerations. The findings showed that teachers and students were interested in the book in all criteria except cultural considerations. The results also showed no significant difference between Iranian teachers' and students' perceptions towards the book. It can be concluded that the book needs to be modified to include some aspects of cultural values to open a window into learning about the target language culture.
