That sounds like the premise of a live-action Disney movie from the 90s, where Maurice is played by Gene Hackman or Robert Duvall, and one of the kids turns out to be Frank Sinatra or Nixon
Bill Mudron
June 10, 1926: A car modified as a covered wagon will be the conveyance for Maurice Veronda, superintendent of the Southwestern Military Academy in Los Angeles, to take the young cadets on a summer-long tour of California.
