2018 Guest lecturer at the Film Academy Baden-Württemberg in Ludwigsburg. Since the summer semester of 2020, Christian Schertz has also been a lecturer at the Faculty of Law at the University of Potsdam in the field of press and media law. With effect from June 1, 2022, the University of Potsdam appointed Prof. Dr. Schertz as an honorary professor at the Faculty of Law in Potsdam. He has been a regular lecturer at the German Judicial Academy in Wustrau and Trier for many years. In 2020, Prof. Dr. Christian Schertz, together with Prof. Dr. Marcus Schladebach from the Faculty of Law at the University of Potsdam, became co-editor of the new series of publications "Studien zum Medienrecht" (Studies in Media Law) published by Duncker & Humblot.

From 1994, he worked as a lawyer specializing in press, copyright, and media law in Hamburg at the law firm Senfft, Kersten, Voss-Andrae & Schwenn, and from 1997 to the end of 2004 at the law firm Hertin in Berlin (as a partner from 1999 to 2004). In 2005, he founded his own law firm, Schertz Bergmann, together with Simon Bergmann. He advises numerous companies, publishers, and public figures in the field of press and personal rights. Another focus of his work is the entire spectrum of entertainment law, such as the negotiation of extensive artist, advertising, and publishing contracts.

Professor Dr. Schertz continues to be the editor, author, and co-author of numerous specialist books in the field of media law and regularly publishes articles on this subject in relevant specialist journals (ZUM, NJW, AfP).

Until 2010, he was deputy chairman of the Specialist Lawyers' Committee for Copyright and Media Law at the Berlin Bar Association, is an honorary member of the Joint Judicial Examination Office of the States of Berlin and Brandenburg (GJPA), and a member of the Friends of the German Film Academy.