Some high school students in San Francisco will get a treat Monday when two 49ers football players give them a lesson in financial planning.Vernon Davis and Joe Staley will showcase Financial Football at Candlestick Park. It is a football-themed video game and classroom curriculum developed by Visa to help teach young people financial responsibility.More than 40 students from Mission High School and Thurgood Marshall High School will gather in the team's locker room for the demonstration.Photo Credit: Getty Images