A former Gustine High School vice principal has admitted to felony sex crimes involving a student on the Gustine campus, according to newly filed Merced County court records — revelations that have raised fresh concerns among parents and educators about how he later secured administrative jobs in Modesto. Prosecutors say the conduct occurred in the spring of 2022 while Chubon was serving as vice principal at Gustine High School. In his plea, Chubon acknowledged the elements of the charges, which stemmed from the unlawful relationship with the Gustine student. After leaving Merced County, Chubon relocated to Stanislaus County and was hired by Modesto City Schools. District officials confirmed he became assistant principal at Mark Twain Junior High School in July 2022 and was promoted to principal at Roosevelt Junior High School in July 2025.