[4] In order to stay close to home, and because he wanted to have an immediate impact,[6] Law chose to play for Texas A&M under Coach Melvin Watkins.

In the Texas State High School All-Star Game Law scored 35 points, leading his team to victory.

[9] Gillispie's intense coaching style was very different from that of Watkins, and after an initial two-week boot camp Law seriously considered transferring to a different school.

[6] After seeing a video of UTEP's NCAA trip the year before Law decided that he wanted to experience that feeling too, and committed to staying at A&M.

[9] Law's commitment paid off, as under Gillispie the team improved from 7–21 to 21–10, winning half of their conference games and earning an invitation to the NIT.

In his best game of the season, against Houston, Law earned nine assists and scored 25 points, making all twelve of his free throw shots.

[4] Law also set an A&M record in Big 12 play, scoring 35 points and earning seven steals in a game against Oklahoma State.

After making the game-winning three-pointer at the buzzer to beat the Texas Longhorns 46–43, Law was named Big 12 Player of the Week.

With his ranking among the top 10 players in the Big 12 in scoring, assists, steals, and field goal percentage, several newspapers named Law to their first-team All-Big 12 teams.

The dream was dashed fifteen seconds later, however, when Darrel Mitchell made a three-point shot to win the game for LSU.

[11] On February 1, 2007, Law was named one of the seventeen finalists for the Bob Cousy Award, presented annually to the nation's top collegiate point guard.

In a historic moment on February 3, 2007, Law's Aggies became the first Big 12 South team (in 32 attempts) to ever beat the then-Number 6 Kansas Jayhawks at Allen Fieldhouse.

Kansas led for much of the game, but Law scored 10 of A&M's final 13 points to ensure the victory for the Aggies, and Big 12 Player of the Week honors for himself.

[13] Two days later the team beat then-Number 25 Texas, their twenty-first straight home win, making them the sole leader of the Big 12.

Although forced to leave the game for three minutes after hitting the floor hard and injuring his leg, Law earned 21 points and a school-record 15 assists in the 100–82 victory over their archrivals.

He also made Dick Vitale's 1st Team All American squad as players such as Arron Afflalo of UCLA, Alando Tucker of Wisconsin, and Nick Fazekas of Nevada did.

[17] On Selection Sunday, however, the Aggies were rewarded for their regular-season play with a Number 3 seed in the South region of the 2007 NCAA Tournament.

[18] Exhibiting his trademark poise in front of an unfriendly crowd during a tough second-round game against Louisville, Law again provided a number of big shots.

In a show of good sportsmanship, Law spent time after the game consoling disappointed Louisville freshman Edgar Sosa, complimenting him on his performance.

In his rookie season, Law averaged 4.2 points and 2.0 assists, and made 20.6% of his three-point attempts as well as 40% of his field goal shots.

[27] On November 16, 2009, Law was traded to the Charlotte Bobcats along with Stephen Jackson in exchange for Raja Bell and Vladimir Radmanović.

In order to continue to compete, the naturally right-handed Law taught himself to shoot the basketball with his left hand.