It definitely isn't the "real world". I had a sophomore year followed by a senior year. All that required was some petitioning of the school board to define a "senior" by the number of credits completed vs the number of semesters attended. The same standard applied at the college level. That change enabled 30 people to graduate a year early. I was able to attend UCSD instead of another year at a public high school.
It's a great option for those that want to be done NOW and get on with life.