it all depends how old school you want to get.
There was the very earliest cma films which were all revolve about burning down lotus temple.
then, there was the wong fei hong series which featured very choppy chop-socky actions.
then, there was the wuxia films of the 70s which employed wire tricks.
then, there was bruce Lee's semi-realistic actions.
then, there was the lau kar leung's hard style hung gar films.
along with the jackie chan's comedic martial films, later action comedies.
so, depending on which era you cite as old school, you can have wire fu considered to be "old school".
I started watching wuxia films in the early 70s, let me assure you, I was fed a regular diet of wire fu movies, tv series, blah, blah.