Since 2012, Institute of nursing (IN) has been given a priority to educational quality assurance and continuously utilizes internal quality assurance (IQA authorized by Ministry of Education, and CUPT-QA) as a mechanism for developing the academic operations. As the concept of outcomes-based education influenced nursing education in Thailand, in 2017, IN has decided to use the Asian University Network Quality Assurance (AUN-QA) criteria version 3 as a guideline for excellence in educational quality management. After AUN-QA criteria version 3 had revised, IN started to implement AUN-QA version 4 in 2022. Over the past 12 years, the nursing curriculum has shown a trend of improvement under the use of various quality assurance systems.