On February 7, 2009, Tam won its fourteenth consecutive Marin County Championship, with captains IndiAna Gowland and Frank Alarcon winning as outstanding prosecution attorney. Tam went on to win its second State Championship on March 22, in Riverside, beating the 2007 champions, Elk Grove High School. At State, Junior Ben Harris won the best constitutional advocate award for his role as pre-trial defense lawyer. At the May 2009 National Mock Trial Competition in Atlanta, Georgia, Tam ranked 6th in the nation. Tam extended its streak to 15 Marin County Championships on February 6, 2010, advancing to the California Mock Trial Tournament, held March 19–21 in San Jose. Tam finished in sixth place, with Junior Amanda Weinberg receiving a Special Commendation as Outstanding Prosecution Witness. On February 5, 2011, Tam won its 16th consecutive Marin County mock trail championship. They competed in the California state finals in Riverside on March 25–27, securing a fourth-place finish. Sophomore Anna Lipman received a Special Commendation as Outstanding Defense Witness. On February 4, 2012, Tam won its 17th consecutive county title, besting Terra Linda High School—its championship round rival for five years running—by one point. The team will go on to the State Competition in Sacramento on March 23–25. The winning ways continued on February 2, 2013 when Tam High claimed its 18th consecutive Marin County Championship, this time with a victory over a team from Novato High School.