User blog comment:LiliumSnow/A Question Regarding Jaune's Non-Existing Training/@comment-3146930-20131005022500/@comment-3146930-20131005024550

Well if you have to be at least 13-14 to enter a combat school, that leaves plenty of time for Jaune's parents to notice he wasn't good at combat. I'm going by 13 because people are 17 when they enter Beacon and Ruby was bumped 2 years, so she most likely joined Sanctum at 13-ish.

Anyway back to the point, what I was trying to say is that maybe Jaune's father tried to train him in combat early on; like when he was growing up. When his father didn't see any skill in the boy, he gave up on him and refused to train him, seeing it as a waste of time. So Jaune went to a regular school for most of his life, but eventually applied to Beacon with fake papers, stole his sword and shielth from his family, and ran away from home to join Beacon.