Contemporary educational reform in North America, as well as other parts of the world, has led to a shift toward conceptualizing assessment, teaching, and learning for the purpose of developing students' competencies (e.g., critical thinking, complex problem-solving, creativity and innovation, collaboration). Both in K−12 schools and higher education, instructors need to adopt innovative pedagogies and assessments to support the fostering of these competencies. In this chapter, the authors report on a mixed-method study where the implementation of problem-based learning (PBL) was used in a preservice teachers' assessment course designed in a teacher preparation program at one western Canadian university. The findings acknowledge that facilitating PBL is a pedagogical shift and requires instructors to revisit their pedagogical practices and assumptions in relation to student learning and teaching. The chapter concludes with three directions for future research.