After completing his secondary education O'Connor moved on to Maynooth College where he obtained a B.A, H.dip Ed in Spanish and Irish. His first teaching job was at Waterville Tech. He progressed from there to his alma mater, Scoil Ui Chonaill, where he remained on the teaching staff until 1999. Here O'Connor became involved in training the school's football team and he enjoyed much success as a coach. In 1997 he guided Scoil Uí Chonaill to the Kerry county title in the vocational schools championship. A Munster title quickly followed before an All-Ireland final showdown with St. Malachy's from Castlewellan. O'Connor's side were victorious on that occasion.