The purpose of the present study was twofold: to explore the sources of the hidden curriculum in evaluation and certification activities and to analyze the impact of the hidden curriculum on evaluation and certification activities. Methods of observations, interviews, and document analysis were adopted to observe the "Traffic Safety Education Evaluation Activity" of three elementary schools as well as three activities of "Taipei Quality School Certification" participated by one elementary school. Supplemented with document analyses, the present study also conducted interviews with related administrative staffs and teachers after completing evaluation activities. Five sources of the hidden curriculum in evaluation and certification activities were identified, namely "Ideology in education policies", "Institutional evaluation activities", "Guidance measures for counseling groups", " School's organizational culture subject to be reviewed" and "the thought of checking by appraisers. The impact of such hidden curriculum involved "Learning experiences of the reproduction theory" and "Learning experiences of the reactance theory". "Learning experiences of the reproduction theory" included "concept reproduction", "action reproduction", "form reproduction" and "situation reproduction", while "Learning experience of the reproduction" entailed "form reactance", "speed-up reactance" and "contest reactance".