Field education is the most challenging aspect of social work education and there are unprecedented challenges currently measuring good practice with quality outcomes. Thus, it's important to have competency-based key performance indicators (KPIs) to assess social work professional practice. This study is a national, mixed-methods Delphi research study with three rounds. Round 1 required participants (N=46) to provide open-text qualitative responses on how to assess students' competency on placement, meeting core social work values and ethics. In round 2, participants' responses (N=59) were analyzed in relation to AASW Practice Standards. The final round, consensus was obtained from participants (N=71) with 31 KPIs receiving participant agreement. Establishing national agreed-on KPIs is an essential step in maintaining consistency across diverse placement sites.