It is considered valuable and worthwhile for a society to educate all of its children/citizens. This means we have to develop systems and techniques to educate all kinds of people, not just the ones who can be dropped off by themselves at a library when they turn five, and picked up again in fifteen years with a PHD.
Sure. People who are self motivated are who will benefit the earliest. If a society values ensuring every single citizen gets a baseline education they can figure out how to get an AI to persuade or trick people into learning better than a human could.