This work is focused on the evaluation of the Mechanical Engineering program at the Universidad Austral de Chile - UACh, which has been implemented following PBL principles. The evaluation of this curricular change aims to compose recommendations for improvement of the design, planning, and implementation. In methodological terms, the evaluation follows the general principles concerning improvement/accountability-oriented evaluation approaches. Specifically, it was chosen the evaluation model called CIPP, an acronym from its four core concepts: Context, Input, Process, and Product evaluation. As a result of the application of these four interrelated types of evaluation, UACh stakeholders should realize significant improvements in terms of communication, faculty training, implementation of the change in the semester still under the traditional approach and provide incentives to the professors that are carrying out the change.