He certainly excelled in many scientific subjects but the rest didn't interest him.

I don't have anything to cite this with(apart from knowing that there's talk about this in Wikipedia) due to time constraints right now, but many very well developed individuals get bored at school because the education is outright boring for them, the rest are so far behind to them that they are forced to deal with stuff which they already excell at very well and thus they get bored. I think this is how people like Einstein must have felt, and there are many cases of this happening all the time.

People simply are different, others learn faster and are more developed than others, and for many of those the slower pace of education feels outright boring and demotivational -- it's not the lack of intelligence, willingness or ability to learn but rather the school system itself.

Such people are among school dropouts for sure. I too dropped vocational school because of the mere reason that I'd rather study math and compsci on my own than about metal surfaces and lubricants with a bunch of retards. Yet, I have "failed" the most basic secondary education in this country. Yay, what a failure with tons of willingness to learn and understand. This is partly the reason why I hate it when people judice others based on their education, there are cases where it tells absolutely nothing about the person's ability and motivation to learn when the subjects match it.