Improving student outcomes can be influenced by the basic role owned by the teacher, one of them is teacher pedagogical competence. It is crucial because reflected in the curriculum and learning process implementation. Nevertheless, the indicator of teacher quality that less research is pedagogical competence, and The problem faced by the English teacher is developing the pedagogical skill of English language itself where the teacher is a key role in effective language. Whereas, pedagogical competence is an important thing to improve student achievement besides teachers‟ professionalism. Therefore, this study is discussing the correlation between students‟ perception toward teachers‟ pedagogical competence and student achievement in English subject at SMA Islam NU Pujon because there are still few studies that investigated it. This study was intended to answer these questions: (1) How are the students‟ perceptions of teachers‟ pedagogical competence in English subject?, (2) How is the student achievement in English subject?, (3) Is there a significant correlation between students‟ perceptions toward teachers‟ pedagogical competence and their achievement in English subject at SMA Islam NU Pujon? Being designed in correlational study, the population of this study was 120 students at twelfth grade on the odd semester 2020/2021 academic year. The sample was 92 students and used simple random sampling technique. Questionnaires and tests were given to students to determine teacher pedagogical competence, student achievement, and their relationship. The result of the responses from students regarding questionnaire and test were classified into 3 categories (high, medium, and low). After that, those score then being analyzed using bivariate correlation in SPSS 20. Using bivariate correlation analysis, the result showed that the correlation coefficient value was .373 which means the relationship is positive. Furthermore, the sig. value was .000 which was less than .005 means that there was significant correlation between students‟ perception of English teachers‟ pedagogical competence and their achievement. Therefore, the higher English teachers‟ pedagogical competence, the higher the students‟ English achievement.