Abstract Name : Raizatul Hijjah Student No. : 0906102050079 Study Program : English Department Title : Teaching Speaking By Using Role Play Technique for Senior High School Students (An Experimental Study for Second Grade Students of SMA 8 Banda Aceh) Key words: Teaching Speaking, Role playing technique This research aim to reveal the differences in the ability of speaking after the application of role play technique to senior high school students of SMA 8 Banda Aceh. The research used an experimental study design. The hypothesis of this research are: (1) Ha: Role play technique improve students’ ability in mastering speaking aspect in the context of pronunciation, grammar, vocabulary, fluency, and comprehension. (2) H o : Role play technique doesn’t improve student ability in mastering speaking aspect in the context of pronunciation, grammar, vocabulary, fluency, and comprehension. The data was analyzed by using quantitative technique and T-formula. Research population is the students of SMA 8 Banda Aceh. The samples of this study are second grade students. The data on this study was analyzed by using T-formula to find out the T-score. After several treatments had done, the researcher found the improvements of students speaking ability in the aspects of speaking context. Therefore, the alternative hypothesis (H a) was accepted and the Null hypothesis (Ho ) was rejected. Its means that teaching speaking by using role play technique improved student’ ability in mastering speaking