Youth PROMISE Act

Youth Prison Reduction through Opportunities, Mentoring, Intervention, Support, and Education Act or the Youth PROMISE Act - Amends the Juvenile Justice and Delinquency Prevention Act of 1974 to establish a PROMISE Advisory Panel to assist the Office of Juvenile Justice and Delinquency Prevention in: (1) assessing and developing standards and evidence-based practices to prevent juvenile delinquency and criminal street gang activity; and (2) collecting data in designated geographic areas to assess the needs and existing resources for juvenile delinquency and criminal street gang activity prevention and intervention.

Authorizes the Administrator of the Office of Juvenile Justice and Delinquency Prevention to award grants to local governments and Indian tribes to: (1) plan and assess evidence-based and promising practices for juvenile delinquency and criminal street gang activity prevention and intervention, especially for at-risk youth; and (2) implement PROMISE plans, developed by local PROMISE Coordinating Councils (PCCs), for coordinating and supporting the delivery of juvenile delinquency and gang prevention and intervention programs in local communities.

Establishes a National Research Center for Proven Juvenile Justice Practices to provide PCCs and the public with current research and other information about evidence-based practices related to juvenile delinquency and criminal street gang prevention and intervention.

Directs the Administrator to award grants to: (1) allow institutions of higher education to serve as regional research partners with PCCs; and (2) hire and train law enforcement officers as youth-oriented police to work with PCCs, other community-based organizations, and high-risk youth. Establishes a Center for Youth-Oriented Policing.

Mynisha's Law - Authorizes any local or tribal government or a group of counties to submit an application to the Attorney General for designation as a High Intensity Gang Activity Area.

City Youth Violence Recovery Act - Authorizes the Attorney General to award grants to partnerships comprising state mental health authorities and local or private entities to prevent or alleviate the effects of youth violence in urban communities with a high or increasing incidence of such violence.

Prevention Resources for Eliminating Criminal Activity Using Tailored Interventions in Our Neighborhoods Act of 2009 or the PRECAUTION Act - Establishes the National Commission on Public Safety Through Crime Prevention to: (1) carry out a comprehensive study of the effectiveness of certain crime and delinquency prevention and intervention strategies: and (2) make initial and final reports on such strategies to specified federal and state officials.

Authorizes the Director of the National Institute of Justice to make three-year grants to public and private entities for the implementation and evaluation of innovative crime or delinquency prevention or intervention strategies.

Amends the Violent Crime Control and Law Enforcement Act of 1994 to authorize grants for the creation and expansion of state, local, and tribal juvenile witness and victim protection grants.