I would start EDU at 10 (unless you are trying for a specific setting such as an academic setting, in which case GM Fiat would rule), but set the maximum for a starting character at age-5, otherwise you'll end up with quite a few over educated characters walking around.
Then, EDU will feed into profession skills. EDUx20 for normal level games, EDUx25 for heroic, EDUx30 for epic, and EDUx40 for superhuman.
I would make EDU cost 3 points during character creation and bump the number of points to either 34 or 36 for a normal level campaign. Note: I haven't actually tested this, but it seems to be a good medium for getting characters that are reasonably educated without nerfing the characters too badly or creating ubermensches. If you're shooting for a higher than normal level campaign, increase the build points by 12 per campaign level as mentioned in the book.
I'm pretty sure other forum members will have much better suggestions.