In his high school career, Jamison recorded 217 tackles (89 solo, 71 for losses), 45 sacks, and 14 forced fumbles.

He enrolled in the University of Michigan and in his first season with the team he recorded four tackles before enduring a season-ending injury.

At the end of the season, he was named to The Sporting News Freshman ALL-Big Ten team.

He started the season in the depth chart as a backup defensive end to Rondell Biggs.

He started all 13 games at defensive end and was credited with 52 tackles (10 for losses), 5.5 sacks, 1 interception, 3 passes defended and two forced fumbles.