It often seems this way because, the times for which we could have used in making the most charge has past. Schools no longer serves as a guarantee to some gainful employment like the early days of independence of developing countries. I hear from the time of my father's, most of them were practically handpicked into there jobs because the educated once amongst the populace were just a handful and so it was easy to place them.
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I dare say it never did. Elementary school and college are more general "educations". I believe that someone will really specialize in something when they have a master's or doctorate.
Before that, it is nothing more than general knowledge about a specific subject.