Have you struggled with making self and peer assessment an integral and valuable part of TBL? Would you like a way to develop soft skills in your students that are not explicitly taught in your curriculum, but are needed in the workplace? The MGH Institute of Health Professions physician assistant program’s TBL process of self and peer assessments has evolved organically since its inception in 2016. In this workshop using TBL principles and backwards design, we will discuss the evolution of our self and peer assessment process which began as simply an anonymous survey process to ensure team accountability. Through student and faculty input, the process has been improved and includes themes like giving and receiving feedback, mediated face-to-face small group process sessions, and reflective writing. This process intentionally holds all members of the team accountable and also cultivates soft skills needed by our students in their professional settings. Small group discussions, a gallery walk of possible themes, and development of concrete learning objectives will provide participants with the opportunity to consider self and peer assessments as not just the most challenging component of TBL, but also as the component with the most potential for student development and growth.