Student evaluation of teaching (SET), a major tool for assessing teaching quality in higher education is a crucial research topic. Among 13 studies published about online peer SET in "Assessment & Evaluation in Higher Education" over the past two decades, ease of use, clarity and helpfulness of SET information were repeatedly tested. This study introduces theory from the information systems field to give a multi-disciplinary view in testing how students' perceptions may affect their intention to continue to use an online peer SET system. While past studies focused on ratemyprofessor.com, offering results from USA, Canada and UK, this study aimed to provide Asian insight by using data from Taiwan. Based on 364 student members of the selected website, findings indicated that disconfirmation of SET information significantly affected perceived usefulness, trust and satisfaction, ultimately shaping continuance usage intention of the online peer SET system. Practical implications for online peer SET website managers and institutional SET managers are discussed.