This study is mainly concerned with the assessing challenges English teachers of Kombolcha Secondary School face in teaching grammar through cooperative language learning with particular reference to, grade 9. The data was gathered by four data gathering instruments questionnaire, interview, classroom observation, and text analysis. The data, which were obtained through a close-ended questionnaire, were analyzed and interpreted in the quantitative method, whereas the data which were gathered through interviews and classroom observation were interpreted and analyzed in the qualitative method. Finding shows that lack of student centeredness, lack of being facilitators, inappropriateness of CLL in grammar teaching were the major factors that hamper teaching grammar using CLL. The finding of observation showed that the students disrespect of each other/misbehaving, school location, teachers’ lack of experience on applying contemporary approaches, students learning background, large class size, and lack of supplementary materials are the major problems which facing during teaching grammar. The study suggests improving teaching-learning grammar through cooperative language learning by providing support from school administration, teachers, students, the Education Bureau of Kombolcha City, society, and the Ministry of Education. Teachers should be trained to teach grammar through cooperative language learning, and an efficient mechanism should be developed to assess students’ autonomy. Fostering a team spirit and preparing supplementary materials for cooperative activities is needed.
Keywords: Grammar, Learning, Teaching, cooperative language learning Kombolcha secondary school