My brother became a district manager for a number of banks before he even got his college degree. If you're interested in business working as a teller is a great way to start. I think the bank ended up paying for part of his degree and he got it online.
Good for him! They obviously considered his years of employment as making him the best candidate for the job. After all, who would know more about a job than someone who has been there for a while? There are some things that the books don't teach you!
A bank teller is a great job for someone who wants to go to college. Most of the big banks will provide tuition reimbursement for a business degree. The pay is often times not that great but you can make additional payouts in sales bonuses.