Collaboration, in any shape or form, is valuable in all contexts, including educational settings. As there are increasing demands for teachers and students to keep up with advancements in technology as well as constant changes in educational policies, collaboration seems all the more essential. Furthermore, the traditional concept of collaboration as merely working together has now been extended to strategic collaboration such as that used in cohort-based learning. It is, then, crucial to identify and discuss the types of collaboration that we can find in the English classroom focusing on what has been done and what possibilities we can consider in the Korean EFL context. As such, this presentation will focus on the various types of collaboration that form an intricate network of sharing and cooperating in the English classroom, starting with the perspective of teaching-as-coaching as a way to describe how teachers and students should work together in the classroom. Also, by means of action research in collaboration with teachers and researchers, I will discuss how professional development that is more aligned with the needs of the teachers can be provided. Finally, I will provide some examples of how teachers and students can collaborate with machine translation to enhance foreign language learning in the Korean EFL classroom.