Abstract
The focus of this study is to know students' perceptions on English in order to give some feedbacks to improve their ability in learning English. Therefore, the objectives of the study were to investigate the students' perceptions on English as a medium of instruction, to know some factors influencing the students' perceptions and to identify whether there is any relationship between students' perceptions and their English achievements. This study employed qualitative research and the data were collected through documentation, classroom observation and questionnaire which were analyzed using percentage formula. The study reveals that students have both positive and negative perceptions against English and there are some factors contributing to students' perceptions, such as attitudes, beliefs about self, goals, involvement, environmental support and personal attributes.