Error correction research has focused mostly on whether teachers should correct errors in student writing and how they should go about it. Much less has been done to ascertain L2 writing teachers' perceptions and practices as well as students' beliefs and attitudes regarding error feedback. The present investigation seeks to explore the existing error correction practices in the Hong Kong secondary writing classroom from both the teacher and student perspectives. Data were gathered from three main sources: (1) a teacher survey comprising a questionnaire and follow-up interviews, (2) a teacher error correction task, and (3) a student survey made up of a questionnaire and follow-up interviews. The results revealed that both teachers and students preferred comprehensive error feedback, the teachers used a limited range of error feedback strategies, and only about half of the teacher corrections of student errors were accurate. The study also showed that the students were reliant on teachers in error correction, and that the teachers were not much aware of the long-term significance of error feedback. Possible implications pertaining to ways to improve current error correction practices were discussed.