This research aimed to develop EFL speaking skills for 5^th grade, primary stage students through the ARCS strategy. It started with a review of literature and previous studies related to ARCS strategy and speaking skills. This research represents a graduation project of a group of eight EFL student-teachers. An action research design was employed. The student-teachers designed the study's instruments, namely, a pre/post speaking skills test and a rubric which were administered to the research group students to assess their speaking skills before and after conducting some speaking activities. The study results showed that there was a development of the students' speaking skills - grammar and pronunciation in specific. It can be concluded that the ARCS strategy is effective in developing speaking skills for primary stage students and hence it can be used in speaking classes for these students.