[5] His forensic psychiatry experience includes testimony in multiple large class action lawsuits concerning jail and prison conditions, sexual abuse behind bars, and the quality of mental health services within correctional facilities.

He began his forensic pscyhiatry career by providing expert testimony in the case of Rutherford vs. Pitchess, where prisoners sued Los Angeles County because their jail violated their human rights.

[10] He also provided testimony in the case of Ashker v. Brown, which ended the use of long-term solitary confinement at Pelican Bay State Prison in California.

Over the years, Kupers has taught a variety of courses, both at the Wright Institute and at other graduate schools in Los Angeles and San Francisco.

Classes he has taught include Basic Psychoanalytic Concepts, Social Psychopathology, Brief Psychotherapy, and Forensic and Correctional Mental Health.