[10] In 1996, Principal Frank Gold and a group of parents formed the nonprofit Tam High Foundation to raise funds for support of the school.

Several events were scheduled for the year, including a Tam Oral History Project, a centennial documentary, and a celebration over the 2008 Memorial Day weekend.

Architects unveiled a plan for a four-story elevator tower in front of the school's signature archway, complete with a bridge to take handicapped students into the building.

[56] Through the 1940s and early 1950s, Tam played against NBL teams from Healdsburg, Napa, San Rafael, Santa Rosa, and Vallejo; non-league opponents included Analy and Petaluma.

[57][58] The MCAL offers competition in 21 sports as of 2010[update], including baseball, cross country, football, softball, swimming and diving, track and field, and wrestling.

Separate teams for boys and girls compete in basketball, golf, lacrosse, soccer, tennis, volleyball, and water polo.

After sophomore quarterback Donny Mackin broke his wrist in the opening league game, he was replaced by senior Steve Woodward, in his only season playing MCAL football.

The boys team won MCALS in 2010, and proceeded to win NCS in 2012, beating 1st seeded Maria Carillo in the championship game.

[96] On October 23, 2008, the girls varsity tennis team won the 2008 MCAL championship for the first time in nine years, beating Marin Catholic 6–3 in the finals.

[107][108][109] Tam had defeated Redlands East Valley High School of San Bernardino County to win the state championship.

The members of the national championship team were Sandra Allen, Mackenzie Amara, Jason Finkelstein, Jessie Kavanagh, Courtney Khademi, Natalie Robinson, Kelly Stout, and Max Wertheimer.

[110] Marin County defense attorney David M. Vogelstein, coach of the team since 1997, won the Advocate of the Year Award in 2005 from the Constitutional Rights Foundation.

[112][113] On February 7, 2009, Tam won its fourteenth consecutive Marin County Championship, with captains IndiAna Gowland and Frank Alarcon winning as outstanding prosecution attorney.

[114] 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.

[115] 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.

[116] Tam finished in sixth place, with Junior Amanda Weinberg receiving a Special Commendation as Outstanding Prosecution Witness.

[118][119][120] 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 Daniel Caldwell Performing Arts Center a new facility features a new 10,000-square-foot (930 m2) multi-use theatre building as well as significant upgrades and renovations to Ruby Scott Auditorium.

In 2000 the Tam News received a license from the Treasury Department to travel to Havana, Cuba and produced their first color magazine issue.

Throughout the trip, the teams traveled the country and experienced many unique cultural opportunities including Festival Internacional del Cine Pobre.

In 2014, CPSA recognized four members of the News, with Cassie Jeong winning two awards for Hand-drawn Art/Illustration: 1st place for "Startup Weekend Adventures" and 3rd for "Zine Fest."

[131] The staff adviser since 2006, Jonah Steinhart, was a partner in two Silicon Valley startups and was Editor-in-Chief of the Campanile when he was at Palo Alto High School.

[132][133] In 2019, former tennis coach Normandie Burgos was convicted on 60 counts of child molestation, including forcible sodomy and lewd conduct upon minors, after a victim recorded him admitting to sexual acts with minors.The specific accusations against him included inappropriate touching of students during body fat tests, giving unsolicited and inappropriate massages, and sexually assaulting students in his office and the school's locker room.

[134][135][136] The settlement included $11.5 million awarded to Alexander Harrison, who reported the abuse in 2006 but faced disbelief from peers and a mistrial in an earlier lawsuit against the district.

His experience, along with those of other victims, highlighted systemic failures within the school district, where administrators allegedly ignored clear signs of misconduct.

[140] As part of its celebration of its 144th year, the San Francisco Chronicle ran a series in June 2009 listing 144 famous Bay Area high school alumni in a "roll call of fame".

Tam alumni listed included Tupac Shakur, George Duke, Pat Paulsen, William L. Patterson, John Cipollina, Serge Levin and Courtney Thorne-Smith.