[7] Thomas Jefferson "Mathletes" have been active participants in state Mu Alpha Theta math competitions and have achieved noteworthy successes.

[8] They have placed in the Top 10 in national Mu Alpha Theta conventions for the last 14 years and many students have won individual championships.

[9] In 2011 TJHS was recognized for its "contributions to a history of outstanding mathematics service to its community" with the Mu Alpha Theta Rubin Award.

The World Schools Debate Team took home tied for 36th place honors at the national tournament in Fort Lauderdale, Florida TJ, a member of the Olympic Division of the North Puget Sound League since 2016,[15] won the WIAA Washington State Boys High School Soccer Championship 8 times (1983, 1984, 1985, 1986, 1988, 1994, 2005 and 2013).

Overall, Thomas Jefferson athletic teams finished 4th for the 2008–2009 season and 3rd in 2009–2010 for the South Puget Sound League all sports trophy.