Reingold's primary interests include civil rights litigation, appellate practice, prisoners' rights, and civil procedure. Reingold has taught Trial Advocacy, Litigation Ethics, Negotiation, and Clinical Law, and is a past recipient of the L. Hart Wright Award for Excellence in Teaching. He also has taught as a visiting professor of law in Japan and Spain, and as a visiting clinical professor at Boston College Law School. He has served on the board of directors of the Clinical Law Section of the American Association of Law Schools and was a founding member of the editorial board of the Clinical Law Review. Reingold attended Gerry Spence's Trial Lawyers College in Wyoming, and has been recognized as a fellow of the Michigan State Bar Foundation. He serves on the executive committee of Michigan's Institute of Continuing Legal Education, and is trained as a court-approved mediator. The State Bar of Michigan granted him its 2009 Champion of Justice Award for his work as a public interest lawyer.