Abstract
As the trend for English as a medium of instruction (EMI) increases, teacher self-efficacy to teach the contents of their teaching materials in an EMI context has become one of the major challenges. This study investigated the self-efficacy of Indonesian non-ELT pre-service teachers to teach in an EMI context. Two Indonesian non-ELT pre-service teachers, in charge of teaching biology and chemistry in English, in a secondary school in Thailand were interviewed to gain an in-depth information about their experiences. The data from their teaching reflections and interviews were analyzed using thematic analysis. The study shows that both participants perceived that their self-efficacy to teach in EMI context was quite high despite various obstacles during their teaching practicum. Furthermore, four sources of efficacy information
appeared to influence the Indonesian non-ELT pre-service teachers’ self-efficacy to teach in the Thailand EMI context. Mastery experience (the personal experience of success) was the most influential source of efficacy information, followed by the other instances of self-efficacy sources including social persuasion, emotional state, and vicarious experience. The implication derived from this study is that the teacher training institutions in Indonesia need to facilitate the pre-service teachers to help them perceive their self-efficacy to teach in EMI context.
