What I mean, is that every person should be trained to reach their particular potential, and the key word here is particular, because we're not an homogeneous m

What I mean, is that every person should be trained to reach their particular potential, and the key word here is particular, because we're not an homogeneous mass of being that can be trained in the same way and accomplish the same goals. If you see that kid kid isn't a math whiz you don't put him in an advanced calculus class, that would just waste their time, just as the math whiz wouldn't benefit from biology class. This kind of attitude actually serves another, more important, purpose: kids aren't drove on the brink of depression from pushy parents/teachers when they keep failing at something. If everyone is aware of the kids limits the kids won't have to live up to impossibly to be met expectations.