Osborn taught law at the University of Miami, the Benjamin N. Cardozo School of Law at Yeshiva University, the UC Berkeley School of Law, and the University of San Francisco School of Law, from which he retired in 2018.
Osborn instructed law at the University of Miami, the Benjamin N. Cardozo School of Law at Yeshiva University, the UC Berkeley School of Law, and the University of San Francisco School of Law, from which he resigned in 2018.