He is also a former high school teacher and school principal .
McCarthy has been a racehorse owner and trainer since 1960 and is unique in the racing industry in that he does all the work of maintaining and conditioning his horses .
McCarthy is also a former racehorse owner     and school principal .
McCarthy has been a racehorse owner and trainer since 1960 and is unique in the racing industry in that he does all the work of maintaining and conditioning his horses .