Textbooks are required in the majority of language programs. In the case of English as a foreign language, it may be the learner's primary and possibly only source of language input, as well as the foundation for both inside and outside the classroom language practice. Despite their importance, textbooks are not always well-designed, curriculum-consistent, and closely connected with the goals of the teaching program and the needs of the students. As a result, textbooks must be properly scrutinized and selected before being used in language classes. The evaluation of textbooks aids administrators and teachers in deciding which resources are most appropriate for a certain course. It also assists in determining a textbook's strengths and weaknesses. This information will be useful to teachers as they rewrite textbooks and plan for the following course. This thesis was written for the goal of completing the E10 (P.B) evaluation, specifically in the context of teaching English at Tran Nguyen Han High School in Vung Tau, Ba Ria-Vung Tau. This thesis aims to assess the official English textbooks used by teachers and students at Vung Tau's Tran Nguyen Han High School