Karate High School was an American rock band formed in San Francisco, California in 2004 by frontman, multi-instrumentalist and producer Paul McGuire.

Karate High School's second album, The League Of Tomorrow, was released on September 4, 2007, which further honed the band's layered, keyboard-driven style of alternative rock.

In early 2010 Paul McGuire announced that he was done producing music under the name Karate High School and has since chosen to go into other studies.

Once described as an "aggressive blend of poppy punk, hyper post-hardcore, and eight-bit blips";[2] the band began as a spazzy, catchy, keyboard-driven rock act on their debut record, but grew and matured over the course of three records to a sound that crosses the genres of rock, punk, experimental, electronica, and power-pop.

While 2007's The League of Tomorrow effortlessly gear-shifted through poppy, upbeat melodies to heavy electronica-fused pop-punk, their 2009 album Invaders focused on all of the aforementioned elements and further evolved the band's sound.