Thanks y'all!
As for exposure to US presidents - it would be limited for a non-history student. The only two I can think of what would be recognizable would be Washington (as first president, and general) and Lincoln (emancipation).
However, the grade 12 history curriculum in BC (20th century world history) does provide a fair bit of coverage of US presidents and significant policies / decisions associated with them: Wilson and his ideals for the LoN, Monroe Doctrine, Hoover - Dam and "chicken in every pot" (though it's questioned whether or not he himself actually said that), FDR - New Deal, TVA and other works, use of radio to communicate with the people direct, and WWII, JFK - Cuban Crisis, LBJ's Great Society, etc.
Teddy, Taft, Eisenhower, and Ford I don't recall being mentioned of 20th c. presidents, though.