The paper investigates the role of English language teaching materials in the creation of a classroom atmosphere conducive to foreign language education. In this study, teachers and students were given a questionnaire and later interviewed to elicit their ideas about the materials. The data was analyzed and the responses of teachers and students were compared by using one-way ANOVA, post-hoc Scheffe test, and t-test statistics. The results indicated that, except for the regular state high school teachers and students, both teachers and students had serious problems with the ELT materials prepared by international publishers.