The aim of this study was to investigate EFL learners' perception of an outdoor learning program, called English Scout Organization which was developed to strengthen their students' interests in learning English at secondary school. For this purpose, the 20 secondary school students in YPI Darussalam Cerme Gresik, Indonesia, were given questionnaires related to the intervention program. The program was designed for sixteen sessions with the activities including simple jigsaw, drilling, and group work activities which were scheduled in a weekly program. The students were tested in the eighth session (One Day Big English Competition) and in the sixteenth session (English Camp). These two steps of evaluations were employed to check the effectiveness of the implementation and the process of all the scheduled programs and to measure students' participation levels. Based on the analysis of the data collected, it was found that they enjoyed the English Scout Program both individually and in groups. They indicated that they enjoyed non-formal activities especially playing games, competitions, and adventures and their interests towards English learning were also strengthened during the implementation of the program.