Many of the comments here are expressing disbelief that this could have been created by a 12 year old, but people fail to recognize that, not only did Michelangelo have tremendous natural talent, but grow up in a world where, as a child, he was allowed to spend enormous amounts of his time and energy studying with professional artists.

He wasn't being dropped off a school at 7am, squirming in a chair until 3pm, playing video games before dinner and then doing homework until bed all while squeezing in a bit of time for sketching.

The vast majority of people probably benefit more from our current structure, but it does make it much less likely to have "genius" of the type we see in Michelangelo, Mozart, etc.