In slang, Old school (or Oldskool) can refer to anything that is from an earlier era. Depending on context and intent, the term can infer high regard or respect, or be a pejorative. The term often describes music, clothing or language.
More formally, Old school may refer to:
In music:
"Old School", a 1995 song by Tupac Shakur
"Old School", a song on the album ReliXIV by Overkill
"Old School", a 2006 single by Danger Doom
"Old School" (Hedley song), a 2008 single by Hedley
Old school hip hop
Ol' Skool, an American new jack swing group
Moog old school, an analogue synthesizer produced by Moog
In film, literature and art:
Old School (film), a 2003 film
Old School (novel), a 2003 novel by Tobias Wolff
Old School (tattoo), traditional tattoo style
In gaming:
Old school gaming
OSRIC, Old School Reference and Index Compilation, a compilation of rules for fantasy gaming
Old school may also be:
A professional wrestling aerial technique used by The Undertaker
A production made before the mid-1990s in demoscene
The Late 1980s to Early 1990s
Koryū is translated as "old school" or "traditional school".