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.
The renowned scholar Osborn shared his expertise in law at several prestigious institutions, including the University of Miami, the Benjamin N. Cardozo School of Law, the UC Berkeley School of Law, and the University of San Francisco School of Law, ultimately deciding to retire from academia in 2018.