Historically, classroom observations have been conducted in educational establishments for different purposes such as evaluation of teachers, promotion, curriculum design, or professional development. In this study, the researchers aimed to improve the effectiveness of the classroom observation process in an English Language Center based in a College of Technology in the Sultanate of Oman. The study adopted a qualitative research methodology and semi-structured interviews as the data collection tool. In the first stage, observers and teachers were interviewed to understand the existing classroom observation process. Based on the initial data, a training program was developed with materials from international good practice projects. Finally, the changes were identified through the second set of interviews with the participants. The major results of this study suggest that the training program contributed positively to the perceived effectiveness of the classroom observation process, reduced anxiety related to this process, and led to more balanced participation from both the observers and the teachers. Moreover, the implementation of the pre-observation conferences started taking place and post-observation meetings included more constructive feedback. This study adds to the literature on the importance of classroom observation training with a practical training program. This practical approach can be adopted in similar contexts with some adaptation to meet the specific needs of educational institutions. The researchers suggest a qualitative research approach to accompany any such future training to measure the effects of the training program.