<p>This article describes a study on the process of developing and using English teaching materials by English teachers in a vocational school. The study was initiated by observing the classroom activities which focused on how teachers used the teaching materials. Beside the observation process, the data also gathered through an interview between the researcher and the two teachers. The result of data analysis showed that the process of developing teaching materials consisted of two major steps; 1) student’s need analysis process and 2) materials adaptation process. Meanwhile, the developed materials such as pictures, videos, course books, and direct listening materials were applied in the arranged discussion activity. It can be sum up that the teachers developed teaching materials by considering student’s needs. The teaching materials were developed by adapting several existed teaching materials. They were then used mostly in the discussion activity and used as a brainstorming for students.</p>