CNN, like all other large media enterprises, will only include outrageous content. Did you ever notice how they constantly praise certain countries (usually the ones where their owners reside), and they run down other countries on topics which should have never gotten close to international fame.
Its the same with education. They wont include it because its not sensational. If people want education, they will seek it out. CNN will not gain readers/viewers from showing these stories, and that's what they are there for. To make money. What bothers me the most, is that they pretend to be responsible (similar to many other corporations) and even go to far lengths to make themselves look ethical. But sadly, its an image and a front. they have no interest in our well being, education, or even on filling us in on the goings on in the world, unless its sensationalized and provides some $ for them.