In the original version she had a PhD. Post crisis she had two master degrees.
Dick was actually still in his late 20s pre flashpoint (around 27). With Barbara it was really hard to say how old she was, directly pre flashpoint they wrote her as if she was the same age as Dick, even if she had been older before. With Bruce in his late 30s everything would have still been logical.
I'm not sure if the age difference was really that big. In the Tie In comics Tim allready worked as a teacher, it's possible that he was allready in his 20s. But I'm anyway not sure how consistent the time line of these games is.