Learning is a funny thing. On the one hand, you have got the formal education which teaches you the official curriculum, such as how to read, write and perform arithmetic functions effectively. But on the other hand, you also have other sorts of learning, which can help you in a wide variety of different ways. These other sorts of learning are in the fields such as social skills, computer skills, time management skills, and other things for which they do not typically build formal classes. You usually either develop these sorts of skills, or you do not, and they all involve a rather large amount of adaptation if you intend to be successful with them. Schooling can also be divided into the two different types of learning which are required, both for the traditional skills and for the skills that need you to think more outside of the box for them.
The first type of schooling is the more traditional, classroom mode of it. In this form of schooling, you are essentially asked to memorize facts long enough to be tested on your ability to retain them for a short time. In the online world, this is so easily overcome that it is not even funny. Keep in mind that in this day and age, you can access any kind of knowledge that you might ever want to have in mere seconds. The idea that someone would still need to memorize, even while they sit at their computer, is rather foolish.
The other type of schooling, which is often known colloquially as the school of hard knocks, involves adapting to the natural changes which are going to categorize any life that takes more than a couple of decades to unfold. This is the sort of learning which forces a person to learn from the changes to which they have to adapt on a regular basis, and the online world is absolutely perfect for this sort of learning. Online, you have no other choice but to adapt, since it is changing every moment of every day. Online school does help, though.