Magee attended
Centennial High School in
Corona, California, where he was a four-year member of both the varsity baseball and football teams. As a senior, he totaled 86 tackles (26 solo), averaging 7.2 tackles-per-game and led the team with 7.5 sacks. He led Centennial High School in sacks as a junior and as a senior. During his high school career, Magee totaled 193 tackles (60 solo), 11.0 sacks, 7 quarterback hurries, 3 pass deflections and 2 fumble recoveries. He had 13 career games with seven or more tackles and eight games with more than 10. He was listed as the No. 18 all-purpose athlete in the West region by
ESPN Scouts, Inc. He was rated as the No. 4 weak side linebacker in the West region and the No. 21 weak side linebacker in the nation by
scout.com. He was rated as the No. 26 outside linebacker in the country, the No. 3 linebacker in the state of California and the state's No. 44 overall player by
rivals.com. Magee was coached by Matt Logan at Centennial High School. During his high school career, Magee was a part of Centennial’s Varsity Football team as they claimed League Titles four consecutive seasons from 2004-2007, as well as
CIF Southern Section Titles in 2004 and 2007. He joined his high school teammate Shelly Lyons as member of ASU's 2008 signing class when they both committed to the Sun Devils in January 2008. He ultimately chose ASU over
University of Arizona, Louisville, Nebraska, Tennessee and
Washington State University. ==College career==