Learning model Discovery Learning is a concept of learning activities that help teachers in carrying out learning activities that are taught by trying to maximize the active role of students, especially the knowledge they have and how they are applied in daily life in English. With this concept, learning outcomes are expected to be more meaningful for students and easy to remember English vocabulary. The learning process takes place naturally in the form of activities students work and experience, not transfer knowledge from teacher to student. Quality of learning is more important than results. The purpose of this classroom action research (CAR) is to describe the improvement of learning activities of students of class VII.5 in SMP Negeri 1 Keruak with the application of the Discovery learning model. In this classroom action research (CAR) carried out in 2 cycles, the results of the actions taken proved to be able to improve students' mastery learning classically ie in cycle I by 68%, it could increase to 85% in cycle II. The results of this classroom action research show that learning by applying the Discovery Learning learning model can improve the quality of learning and student learning completeness in English subjects with mastery reaching 89%.