Jiangang XiaXingyuan GaoJianping Shen2019-08-122019-08-122015-12-??http://rportal.lib.ntnu.edu.tw:80/handle/20.500.12235/81291In this paper we introduce and review the US National Teacher and Principal Survey (NTPS) as a valued resource for teacher and principal studies. The introduction covers NTPS’s original format and historical development as the Schools and Staffing Survey (SASS) and its redesign and new format. The review examines and discusses how the SASS data have been utilized for educational research and policy analysis. We finally discuss the implications for other education systems.national teacher and principal surveyschools and staffing surveyquestionnairedataresearchpolicyimplication