Changing the curriculum means developing a new curriculum. The transition is not only difficult for faculty members, it is also a big change for students. PBL requires more time of the student's time and expects students to be responsible and independent learners. Success will depend on effective communication and orientation. More Time to Teach Same Content Reverting to what they are accustomed to and transferring information faster, faculty members may want to deliver lectures to PBL students.
Problems are interdisciplinary and engage students in thinking about solutions.
Lectures are not interdisciplinary and provide solutions without engaging student thought. Faculty members first see PBL as taking more time to teach the same content and they are right. When faculty consider the time per week in preparation to teach problems in comparison to presenting lectures, they notice it takes more time. More teachers would be required to teach the same content in a PBL curriculum. More Changing the curricula has associated costs.