Since the implementation of the National Higher Education Evaluation System (SINAES), in 2004, the Ministry of Education (MEC) through the National Institute of Educational Studies and Research Anisio Teixeira (INEP) is promoting changes related to the evaluation of undergraduate programs in Brazil. Such changes include the creation of new concepts and modifications in the composition and in the weights of the concepts derived from the National Student Performance Exam (Enade). Furthermore, transparency in the dissemination of results is increasing. In the 2008 edition of Enade, a detailed disclosure of the results allowed a rigorous analysis of the main official indicator of the quality of undergraduate programs in Brazil, the CPC (Preliminary Program Rating). This paper aims to analyze the effect of the weights used in the CPC, and especially consider the impact that some changes would have on the CPC of programs offered by private and federal universities in Brazil.