The Positive Youth Justice Initiative (PYJI) seeks to transform the juvenile justice system through a broad-based, multi-year effort grounded in the principles of positive youth development and focused on aligning policy and practice with young people’s developmental stages. In PYJI’s current phase, which began in early 2017, community-based organizations in 11 counties across California are receiving funding to advance positive juvenile justice, working in collaboration with local coalitions to develop and implement reform activities. NCCD’s interim evaluation report explores changes in funded partners’ local advocacy environment and community power to advocate for a healthy justice system, with a focus on activities and accomplishments from January to June 2018.