In English study program of Faculty of Eduational Sciences, Muhammadiyah University of Jakarta, Indonesia, the students are prepared to become English teachers in secondary levels. One of compulsory subejcts offered to the students is classroom action research. This subject can be taken by the students after they have passed educational research methodology subject. In her preliminary study, the writer found that almost all students were confused to understand this kind of small research. In light of this, the main objective of this study is to explore students’ understanding of classroom action research discussion through classroom action research studies of others. An action study was conducted in order to see how effective these paper reports in helping students to get the main ideas of what classroom action research is. Total number of 11 students registered in the third semester of this bachelor degree participated in this study. The data were collected through two cycles in which in each cycle each student was asked to present other’s classroom action research paper and focused on its background, research method and research findings. The results showed an awesome impacts in which on the first cycle, 50% of the students were able to explain the whole concepts of what classroom action research is and on the second cycle, 85% students were excellent in explaining the details. In addition, since the students totally presented two different papers of others, they were also able to compare and explain the weaknesses and the strenghs of any paper presented in an interesting discussion. In sum, the result of this action research exceeded the target of the writer to improve the students’ achievement in this subject up to 80%.