In real life the differences with education between two identical twins separated apart does have a mild differences. Still, in general most end their formal education at the same level. Even with the wish to become more educated, like reading nonfiction books or reading books that are the cannon books of any university English Department. They are very much equal with this outcome.
There was a very interesting show called Orphan Black with identical clones born around the same time as each other. With the best educated, she was working on her PhD and the worst was a high school drop out. The clones never tested brinkmanship dealing with intelligence with each other. In fact, the leader of one faction was Sarah who was a high school dropout. When Sarah was born she had a twin sister, and the two women had different upbringing in different countries, and one with a cult religious upbringing were as Sarah was more or less acting like a atheist. They started out to be violent to each other, stabbing and having shot her twin. Even that they were violent with each other, they bonded with each other because they were violent to each other. Still, it was her twin that was the more violent, as she killed other clones and other people without remorse.