Nisrin Nora SYEHA Pengarang Anis Komariah, M.Pd. Dosen Pembimbing 2 Dr. Shafa, S.Pd.I, M.Pd. Dosen Pembimbing 1 Rostanti Toba, M.Pd. Penguji 1 Anis Komariah, M.Pd. Penguji 2 Dr. Shafa, S.Pd.I, M.Pd. Ketua Penguji

Nisrin Nora Syeha, 2023. “The Effectiveness of Using Role Play in Teaching Speaking at the Eleventh grade of MAN Penajam Paser Utara in the Academic Year of 2023/2024”. Thesis, Language Education Department, Teacher Training and Education Faculty, State Islamic University of Sultan Aji Muhammad Idris Samarinda. This research was supervised by Mr. Dr. Shafa, S.Pd.I., M.Pd as the first supervisor, and Miss Anis Komariah, M.Pd as the second supervisor. Background of the research was that the students did not practice their speaking skills in the learning process because the English teacher did not apply any method for students’ speaking practice. This research was carried out to obtain empirical data on the effectiveness of role-playing on students’ speaking ability in the eleventh grade of MAN Penajam Paser Utara. This research used a quantitative with a quasi-experimental method. The population of this research included 126 students and both classes consisted of 33 students, were designed as the control class (XI-1) and the experimental class (XI-2). The research was administered in six meetings, the first meeting for the pre- test, four meetings for treatments, and the last meeting for the post-test. Meanwhile, the data analysis techniques applied in this study include normality test, homogeneity test, and t-test, while observation was included to gather further information on students’ behavior toward role play. The result obtained from this research was the average speaking score obtained by the control class was 60.90 and the average speaking score by the experimental class was 69.09. Meanwhile, the result obtained from the independent sample t-test was a t-count of 2086 and a significance value of 0.043. The significance value is lower than 0.05 it could be stated that Ha was accepted and Ho was rejected, it indicated that there was a significant difference between the post-test results of the experimental class that used role play in teaching speaking, and the control class which was taught without used role play. Additionally, the size of effecr was medium since d=0.6. Moreover, observation results showed that students displayed positive behavior towards role playing particularly in the aspect of verbal participation and fun and excitement. Therefore, it could be concluded that role-playing had a significant effect at the medium level on students' speaking ability and the most prominent factor contributing to the result was that students were more active, enjoyed, and were excited about learning through role-play.