MODEL OF PROFESSIONAL ETHICS DEVELOPMENT IN EDUCATION FOR PRE SERVICE TEACHERS AT VNU UNIVERSITY OF EDUCATION Vu Phuong Lien, Do Thuy Linh (VNU University of Education) Abstract This study aims to get insights into development of professional ethics for pre service teachers at VNU University of Education, Hanoi, Vietnam A survey was conducted on 270 students in the first and the second year to evaluate the reliability and correlation among 18 designed KPIs (Key Performance Indicators) in each di[.]