Textbooks play a fundamental function in educational programs and language classrooms around the globe. They are extremely accessible and useful resources that teachers and students can exploit according to their requirements. The intention of this study is to investigate the significance and effectiveness of B.Sc English textbook which is taught in the affiliated colleges of The IUB from the teachers and students perspectives. The assessment of the English textbook was conducted on the foundation of five criteria: The collection and association of contents in the textbook, price of the textbook, four skills, grammar and vocabulary, mechanism of the textbook. The study was conducted at three Govt. Colleges of Bahawalpur. Quantitative information was obtained through a questionnaire administered to 200 students and 20 teachers. Percentages, frequencies, standard deviations and mean were calculated for every item to explain on the whole depiction of how the students and teachers rated the textbook in conditions of five criteria. The outcomes revealed that both the students and the teachers felt negative about the majority of the items of the textbook. It was established that both grammar and vocabulary did not fulfill the students' needs. Majority of the teachers and the students mentioned that the textbook material failed to enhance the four language skills. It also indicated that there were no exercises and activities included in the textbook. Most of the students and all the teachers declared that textbook was not up to the level of the students.

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