User blog comment:Mr. Ob(li)vious/Was Jaune homeschooled or something?/@comment-3146930-20130828101518/@comment-3146930-20130828183948

However there is another possibility. Jaune repeats a lot of things his parents told him, but never really mentions his friends (if he had any) and doesn't seem to be able to connect to people very well. It is entirely possible that his parents were trying to hide him from the world, like how the fairies hid Princess Aurora from Sleeping Beauty (they're both blond). Maybe they knew that he had a strong Aura or some kind of unfortunate destiny, so they hid him away to protect him.

Then someone from Beacon showed up and told Jaune that he has the potential to help fight evil and become a great hero. The world of RWBY is based on fairy tales, so obviously he would jump at the chance. And because his grandfather was a great hero, he was automatically accepted despite the wishes of his parents.