Teaching mission of service hospital is often last priority to patient care due to increasing workloads. Besides, inappropriate preparation of teachers is a challenging problem leading to poor attitude of teaching. Hatyai Hospital , a service hospital had another teaching mission last thirteen years.

A cross-sectional , longitudinal study using questionnaire was done four times. First period in 2001 before teaching, second period in 2003 one year after teaching . Third and fourth period were seven and twelve years in 2009 and 2014. A questionnaire was developed by Finucaine and colleagues (1995) including 14 items to measure attitude to teaching and attitude to teacher training using 1-7 scale from strongly disagree to strongly agree.

Teacher's attitude and training need are changing from time to time, every medical education center have to recognize and support the staffs to enhance quality of teaching. From this study,what the teachers need most now is not basic educational theory but the assessment and how to give effective feedback courses as they can use in teaching and clinical practice.

Teaching  can be done successfully in service hospital by good attitude teachers and faculty development programme that both serve their needs and institution's needs.