Speaking is one of the most important skills as a means of communicating with others to provide and obtain information. But in fact, the students' speaking ability can be said to be still insufficient. This is based on the results of observations about students not being able to reach the minimum score criteria (KKM) and researcher interviews with teachers who teach English subjects. Therefore, this study was conducted to solve students' problems in speaking ability. This study begins by reviewing existing theories given by experts, the data is analyzed by sorting out theories about the effectiveness of collaborative learning to improve speaking skills. The results showed that productive skills and receptive skills are better improved through regular and repeated practice exercises, including communicating with oneself and others. Group learning is one of the effective ways to improve one's speaking skills. To consolidate this, the teacher should prepare some interesting themes so that it does not feel boring for the learners.