Testing the CrOss Systems Technical Assistance for Retaining Staff (COSTARS) Model for Improving Staff Retention Among Child Welfare Workers and Peer Supporters, and Implementation of Evidence Based Interventions.

The goal of this study is to test whether the CrOss System Technical Assistance for Retaining Staff (COSTARS) supervision leadership institute can promote workforce stability and improved implementation outcomes within the Ohio START child welfare program. The main questions it aims to answer are:

* Among supervisors, caseworkers, and family peer mentors, what is the effect of COSTARS on staff retention and perceptions of the work environment? * What is the effect of COSTARS on service timeliness, implementation fidelity, and parent outcomes within Ohio START?

Researchers will compare public children services agencies implementing COSTARS to those implementing supervision practices as usual to see if there are differences between groups in the outcomes described above.

Participating supervisors will:

* Complete a 6-hour training workshop in the FOCUS model of supervision. * Participate in monthly group coaching sessions with other supervisors, for approximately one year. * Receive individualized feedback from coaches about their supervision performance.