This study aims to investigate the washback effects of new TOEIC on Korean college students` English teaching and learning. The data were collected through both questionnaires and semi-structured interviews. Questionnaires were administered to a total of 72 college students who were taking TOEIC Preparation Courses. Interviews were conducted to 6 TOEIC teachers. Quantitative analysis of the data earned from students` questionnaires indicated that the TOEIC had an influence on the students` English learning methods and strategies in terms of vocabulary and expressions, listening, reading, and pronunciation. Qualitative analysis of the data obtained from interviews with the teachers showed that the TOEIC had an effect on the teachers` teaching contents, methods, activities, and materials.