This is why.

This is why quality free public education is important.

This is why good teachers are worth every penny of their salaries and every penny of their pensions, no matter how bad a state's financial condition.

This is why we must not give up on any students, no matter how tough they may appear to be or how rough the neighborhood they come from.

Want to know why Obama and not Hillary?

This is why:

(h/t: Joe Sudbay)