Developing accuracy in language learning is very important for L2 learners` communicative ability. However, understanding both learner and teacher beliefs in accuracy will be prerequisite. Therefore, this study investigated the opinions of both English teachers and students about grammar learning and error correction in Korean EFL secondary schools. A total of 472 participants (teachers 55 vs. students 417) at Korean secondary schools completed two versions of questionnaires (teacher and student) for the purpose of the study. The finding showed that most of the participants valued accuracy, but they had negative attitudes towards grammar learning. In addition, students, especially middle schools, perceived grammar and accuracy more importantly than teachers or high school students. Students also reported more explicit error correction and negative opinion on peer review than teachers. The pedagogical discussion will be made at the conclusion.