The Trotsky

The sign outside the school board building indicates that it's the "J. Parizeau English School Board", a deliberately-ludicrous name choice since Jacques Parizeau was a famous Québec sovereigntist, and a supporter of the provincial legislation that restricts access to English-language public schools.

When Frank is telling Leon about his (Frank's) experience with protests in the U.S., his listing of events is comically inaccurate. For example, he says there were "massive demonstrations all over the U.S. during the middle of the Kennedy Administration" -- when protests over Vietnam did not begin until the Johnson Administration. He also says that "Woodstock and Patty Hearst" were contemporaneous when the Woodstock Festival was in 1969 and Patty Hearst was kidnapped in 1974.

After credits a usually confused Leon is seen walking up to a bench and sitting on it in a jump suit.

References The Wizard of Oz (1939)