Utilizing drama has long been an innovative and dynamic concept as a part of a communicative approach in English classrooms around the world. Teaching languages through drama offers many beneficial opportunities for learners. Nevertheless, traditional methods are still the widely held teaching structures across the globe, which results in an increase in the number of demotivated learners who often hate and fear to practice one of the challenging skills when learning a foreign language- speaking- as it is a productive language skill. Not only do the traditional methods bring negative emotional and psychological outcomes, but it also causes a gradual slowdown in the language acquisition process. The aim of this study was to exclude these problems and to provide a learner–centered atmosphere. This study is intended to gain insights, analyze and better understand the use of script-based and improvisational drama to develop oral proficiency by taking student motivation and attitudes into consideration. The study addressed the following questions: 1) What are learners’ motivations and attitudes toward developing speaking skills before the intervention and after the intervention?; 2) What unique roles do the script-based versus improvisational drama play in fostering learners’ development of oral proficiency?; 3) What are the participants’ reactions to script-based and improvisational drama instructional techniques before and after the intervention?; and 4) How do they make sense of their oral proficiency gains as they reflect on the experience of participating in the creative dramatic activity? In order to investigate these questions, 2 sessions of script-based and 2 sessions of improvisational drama, total of 4 sessions of drama intervention were offered to learners, and the researcher conducted interviews, video recordings, and field observations and notes throughout the intervention. Findings indicated that script-based and improvisational drama helped learners improve their oral proficiency, decrease their negative motivations, reduce their stress, anxiety and shyness levels, and increase their positive motivations. This study contributes to our understanding of the role of script-based and improvisational drama in language learning process.