In the revised 2015 curriculum, core competencies and subject competencies were introduced in future-oriented perspectives. The general competence is well developed only when subject competence is acquired and subject capacity can be realized through individual lessons. The goal of this study is to analyze the English competency of the achievement standards of the 2015 revision. For this purpose, the Semantic Network Analysis method was used to structurally analyze the text and understand semantic relations. Results of the study show that achievement standards in all school levels were heavily biased to the English communication competency. From this, the following suggestions were identified for additional revisions: First, it is necessary to have well balanced reflection of subject competency on curriculum achievement standards. Second, in order to systematically reflect subject competencies in the achievement standards, it is necessary to departmentalize the subject competencies into subcategories and develop the functionality of the curriculum contents system. Third, subject competence development needs to be aligned with core competence as well as adhere to the expectations and specificity of the English department. By reinforcing the linkage between competency and achievement standards, it is expected that the teaching and learning methods required to raise subject competency will be implemented, and ultimately, the core competence expected in the national curriculum will also be achieved.