ONESQA is Thailand's Office for National Education Standards and Quality Assessment, a public organization established to enhance education quality. ONESQA conducts external quality assessments of educational institutions once every 5 years according to its missions of developing assessment standards and training external assessors. The external quality assessment process involves assessors preparing, visiting institutions, and drafting reports which are reviewed and used to award quality accreditation. External quality assessment works together with internal quality assurance at institutions to provide feedback for continuous improvement.