Fredette was ranked among the nation’s top 75 shooting guards by ESPN.com in high school. He is Section II and Glens Falls High School’s all-time leading scorer, ranking 6th on New York’s all-time scoring list, with 2,404 points. Fredette was named first-team all-state by the New York State Sportswriters Association and the Times Union as a junior and senior. In his senior season Fredette led his team to a 25-2 record and the Class A State Championship game which they lost to a Peekskill High School team led by current Syracuse University forward Mookie Jones. He played AAU for the Albany City Rocks alongside current Penn State University point guard Talor Battle. Fredette averaged 25 points per game to help the Rocks to a third-place win over the Minnesota Magic at the 2006 AAU National Championships.
Despite his high school accolades, he went largely unnoticed by NCAA Division I schools. He received only two Division I scholarship offers—one from Siena, located in the Albany area not far from his hometown, and the other from Lindsay’s alma mater and the flagship school of the LDS Church, BYU.