Trafficking Victims Protection Act of 2017 This bill specifies that Community Oriented Policing Services program grants to hire school resource officers may also be used to train such officers to recognize and respond to signs of human trafficking. It reauthorizes through FY2022 the Creating Hope Through Outreach, Options, Services, and Education for Children and Youth (i.e., CHOOSE Children & Youth) grant program. The Department of Justice (DOJ) may bring a civil action to stop or prevent criminal offenses, including trafficking, child sexual exploitation and abuse, or sexual abuse. The bill revises and expands the functions and duties of the National Center on Missing and Exploited Children. It broadens the authority of the U.S. Secret Service to provide forensic and investigative assistance to state and local law enforcement agencies. The bill reauthorizes through FY2021 several trafficking prevention and law enforcement programs, including for foreign victim assistance. The bill formally establishes the Office of Victim Assistance within Immigration and Customs Enforcement. It makes 1% of the Crime Victims Fund available for direct assistance services for crime victims. The bill directs certain federal agencies to periodically improve human trafficking training programs for employees. DOJ must establish a victim screening protocol for use during anti-trafficking law enforcement operations. It prioritizes, with respect to juvenile and family court grants, programs that improve the judicial response to children vulnerable to human trafficking. This bill establishes the Public-Private Partnership Advisory Council to End Human Trafficking.