This article provides a comprehensive overview of action research, emphasizing its significance as a systematic inquiry process conducted by English teachers within their own classrooms to improve teaching and learning. The main goal is to identify the popularity and usage of Action Research among EFL teachers, at the same time Master’s degree students. The study explores Action Research's role in improving teachers' professional growth and the basic knowledge of the graduate students on Action Research. Action research was first conducted in Kazakhstan in 2012 as a joint project of the University of Cambridge and Nazarbayev Intellectual Schools (NIS) with the goal of improving educational practices. The quantitative research was conducted on the basis of the discipline “Action Research” for the 1st year graduate students of the profession “Two Foreign Languages” of Al-Farabi Kazakh National University. The results of a survey given to Master's students have different levels of familiarity and experience with Action Research. The study will assist to identify the spread and the usage of Action Research among EFL teachers in Kazakhstan. In addition, the study will help school administrators, teacher mentors to understand obstacles faced by EFL teachers and improve educational system in Kazakhstan.