The teaching practice is a crucial part of the teacher education program. During the field experience program, student-teachers put the theory learnt into practice, and acquire teaching experience in actual school settings. The quality of learning acquired largely depends on the quality of support provided by the Institute and the schools before and during the practice period. Dispoto's study stated that student-teachers experienced conflict and stress during their field experience. The strain to learn to teach may result in feelings of incompetence and lack of confidence, and may affect the attitude, behaviour and performance of the student-teachers. Besides support from the Institute, student-teachers also receive support from teachers (mentors) in the schools where they perform their practice. With reference to the expectations for mentors concluded by Grimmentt and Ratzlaff, mentors need some pre-requisite knowledge and skills, e.g. observation skills, up-dated knowledge on education theories, ability to undertake critical analysis of one's and other people' lesson in order to involving student-teachers in planing and evaluating learning experience, conferring and evaluating their development through regular observation and feedback. Since the establishment of the Hong Kong Institute of Education in 1994, a new form of teaching practice has been introduced in the 2-year full time primary teacher education program, namely the Co-operating Teacher Scheme (CTS). Co- operating teachers from schools are assigned to student-teachers and perform the functions of the mentors. In a local study student-teachers were found to have lowered the perception of their competence after the teaching practice. Our previous researches revealed that the co-operating teachers (CTs) would like to have more updated knowledge of education theories, teaching strategies, observation and communication skills so as to enhance the learning of the student-teachers. In order to improve the quality