• In this-study. an al/empt has been made to investigate the implementation of group work al I lossanu college of Teacher Education. To explore the issue, literature on group work and its implementation has been profoundly reviewed. To gather information, three instruments (interview, questionnaire and classroom observation) were employed. Data was gatheredfrom teachers and students. In selecting the samples. teachers were _selected by purpusive sampling techniques and the students by using stratified random sampling (based on sex and batch). Therefore, the participants included were three Biology • instructors and 62 students (40 female and 22male students). Accordingly, six classroom observations were made and. In ·,he description and analysis of the data obtained through the instruments quantitative research method was applied The results of the study show that teachers do not pay more a/lent ion for their roles at the beginning of group work. Setting groups based on students' ability, background, and interest has not become practical by the majority of instructors. They organize groups only on their sit4 has is. In addition almost all teachers did not assign roles for each group member and they-did not allot enough time for their students. Concerning teachers monitoring group discussion, instructors did not motivate all students to participate in group discussion In Moving out of group activity the instructors did not assess individuals performance in a group. Student response and result of classroom observations show that there was no feedback on the strengths and/or weaknesses ofgroup performance and also t!1ere was no opportunity for students to comment each other. Based on the results of the study and conclusions drawn, the recommendations were forwarded to improve the implementation of group work in the coflege under study.