Christy played high school football at St. James High School for Boys, where he was named twice first-team all-scholastic by the Philadelphia Bulletin in 1952 and 1953. He also led St. James to the Philadelphia City Football Championship in 1953.
College career
Christy was a star halfback for the NC State Wolfpack football team from 1955 to 1957, leading them to the 1957 Atlantic Coast Conference championship in his senior year. With the league title on the line in the season's final game, Christy scored all 29 points in a 29–26 win over the South Carolina Gamecocks to clinch the championship for his team. Christy scored the dramatic winning points on a field goal on the last play of the game. At the conclusion of the 1957 season, he was named first-team all-ACC and first-team All-American. He was also honored as the 1957 ACC Player of the Year in football and as the 1957–58 ACC Athlete of the Year for all sports. His number 40 was retired in 1997 by NC State.