A three-sport star at Serra and the No. 6 overall player in the nation, according to Scout.com, Jackson also has aspirations of making it to the Olympics in the long jump.
Jackson (5-foot-10, 170 pounds) picked USC over UCLA, Florida and LSU and joins Serra teammatesOlajuwon Tucker (LB) and Jalen Greene (QB) as USC signees.
As a senior, Jackson gained 1,840 all-purpose yards, scored 18 touchdowns and added 26 tackles and eight interceptions on defense.
Other local players suiting up for the Trojans this fall: Bryce Dixon (TE, St. Bonaventure), Jonathan Lockett (CB, Mater Dei), Viane Talamaivao (OL, Centennial), Ajene Harris (WR, Crenshaw), and Malik Dorton (DE, St. John Bosco).