I'm trying to find a film from the 80's ish, it has a very similar story line as "never back down" which was released a few years ago and "karate kid"! A mother and son moves home and in the new school the boy starts getting into fights, then the janitar trains to fit (the training s done in a run down boiler room/shed) and at the end he wins (lol)!

Hope some one can help me! Please!!

Thanks

Showdown (1993/I) (http://www.imdb.com/title/tt0111174/)

Thank you so very very much!!