How much of what you learn in college is useful?

Monkeys,
How much of what you learn in college is actually useful in investment banking and high finance?

I frequently find myself reading about companies spending a lot of time training interns and analysts so that they can properly function in investment banking roles. How much of a finance background do you need to properly undergo training?

I know that much of what you learn outside the classroom (time managements, social soft skills, keeping up with the markets, etc.) is essential throughout the entirety of my career. Compared to those skills attained throughout your years in college, how valuable is the knowledge gained from the courses taken in college?