Holly played at North Branford High School from 1985 to 1988. She was a four-year varsity player, starting as a freshman. In her junior and senior years, her teammates recognizing her leadership ability, elected her captain.
For her entire career, Holly led her team in passing, hitting, kills, and blocks. For her career she averaged 85% in hitting, 12 kills a match, and four blocks a game. She also had 106 service aces in her senior year.
Holly was named MVP in her freshman, junior, and senior years. She was on the all-Shoreline team all four years and was named to the all-state team her sophomore, junior and senior years. In 1986, ‘87, and ‘88 her team reached the quarterfinals of the state tournament.
Holly was offered a full scholarships to play volleyball by Division I schools, however as an outstanding basketball player, she chose to play basketball at Syracuse, ending her outstanding volleyball career.