Booker was regarded as one of the elite tailbacks in college football entering the 2006 season, despite sharing playing time and starting only 5 of 35 games during his first three years with the team. However, Booker soon found himself again sharing playing time (Antone Smith), as he failed to live up to those lofty expectations during his final year at Florida State.
The offensive captain was the Atlantic Coast Conference's leading active rusher entering the 2006 season, but continued to see his production be reduced since his sophomore year, when he rushed for 887 yards. He managed only 552 yards on the ground in 2005 while starting three times, and despite starting 11 times in 2006 he amassed only 525 yards during the regular season.
Booker was regarded as the nation's top running back (Parade and Rivals.com) as a senior at Saint Bonaventure High School. He earned Parade All-American and Prep Star Dream Team honors. He added USA Today All-USA first-team accolades and Tom Lemming's Prep Football Report listed Booker as the third-best overall prospect in the country.
During his three-year high school career, Booker compiled state records of 8,502 rushing yards and 137 touchdowns, leading his team to a 42-0 record. He ran for 2,878 yards and 50 touchdowns, adding 16 receptions for 300 yards and three scores as a senior. He was named California State Player of the Year after rushing for 3,103 yards and 49 touchdowns as a junior.
The product of a heated recruiting war, Booker selected Florida State over Notre Dame, Southern California and Washington. He redshirted as a true freshman in 2002 and saw action in 10 games as a reserve tailback in 2003, sitting out the Georgia Tech, Duke and Colorado games with knee and ankle sprains. He finished third on the team with 334 yards and three touchdowns on 62 carries (5.3 avg). He added 86 yards on 19 catches (4.5 avg) and recorded one solo tackle.
Booker started 2 of 12 games in 2004. He carried 173 times for a career-high 887 yards (5.1 avg) and four touchdowns, leading the team in rushing in five of those contests. He made 24 catches for 160 yards (6.7 avg) and generated 1,047 all-purpose yards.
The cat-quick tailback earned three starting assignments during the 13 games he played in during 2005. He led the team with 552 yards and four touchdowns on 119 attempts (4.6 avg). Booker also finished third on the team with a career-high 38 catches for 329 yards (8.7 avg) and two scores. He also returned one punt three yards and posted 884 all-purpose yards.
With Leon Washington having graduated, Booker was named offensive captain, starting 11 of 12 games in 2006. He shared those duties with Smith, but still led the team with 121 carries for 525 yards (4.3 avg) and two touchdowns. He totaled 303 yards on 28 receptions (10.8 avg) and returned four kickoffs for 66 yards (16.5 avg), amassing 894 all-purpose yards during the regular season.
In 47 games at Florida State, Booker started 16 times. He became the 11th player in school history to rush for more than 2,000 yards in a career, rushing 475 times for 2,298 yards (4.8 avg) and 13 touchdowns. He hauled in 109 passes for 878 yards (8.1 avg) and two scores. Booker returned four kickoffs for 66 yards (16.5 avg), had one punt return for three yards and recorded one solo tackle. He touched the ball 589 times during his four seasons, gaining 3,245 all-purpose yards, an average of 69.04 yards per game.