This scientific article presents the Internal quality Evaluation Model of Atacama University (MEIC-UDA) as a scientific methodological tool for the continuous quality assurance. The argumentation and description of theoretical principles, operating axes and organizational structure arise from internal quality evaluation conception as a permanent, participative, scientific and contextualized process. This Model implementation allows the development of an auto evaluation culture inside the university, and at the same time, stimulates the autoregulation, ensuring objective and reliable evidences in a sustainable improvement.