I've been making a list of the things they don't teach you at school. They don't teach you how to love somebody. They don't teach you how to be famous. They don't teach you how to be rich or how to be poor. They don't teach you how to walk away from someone you don't love any longer. They don't teach you how to know what's going on in someone else's mind. They don't teach you what to say to someone who's dying. They don't teach you anything worth knowing.
Neil Gaiman, The Sandman, Vol. 9: The Kindly Ones
It is very rare that an teacher/professor will share his personal experience and opinion.
Its the so called - British school system , that has nothing to do with you and all to do with your productivity for the country.
But even so, most professors I had were their own grown up adults and they felt a need that we learn at least the basics of what's mostly important.
If you want to be some one you must do it your self. And you don't need fame to feel successful, nor do you need to abandon some one just because you cant find the solution right away.
And in my opinion, one of the best things in life is learning by first hand experience.
Failing at something is the best way to learn, and anything self taught is best taught.
However life will, usually the hard way.
that's (seriously) the one subject you need to master