Since joining the Alexandrinsky Theater to the post of artistic director, Valery Fokin, Chepurov led research work in the oldest Russian theater as the head of the creative research section. During his work in this position at the Alexandrinsky Theater, a unique Museum of Russian Drama was created, which combined and structured the richest historical collection on the history of the Alexandrinsky Theater. Today A. A. Chepurov is an adviser to the artistic director of the Alexandrinsky Theater.
Since 2011, he served as rector of the St. Petersburg State Academy of Theater Arts, in 2014–2017 — Rector of RGISI.
Executive editor of the book series "Library of the Alexandrinsky Theater", which published twelve books on the history of Russian theater. Editor-compiler of publications: "Alexandrinsky" Examiner "Valery Fokin" (2005) and "V. Fokin. Conversations about the profession" (2006).
Honored Artist of the Russian Federation and Laureate of the Stanislavsky Prize.