CB and Kaplan v the Real Test?

Hello! I was just wondering how my real score might compare to the average scores I’ve been getting. My teacher said that the Kaplan tests tend to be more difficult, and that I may see a 30-50 point increase. I was wondering if the CB book was the same, or if my information is inaccurate? My scores have been around the 650s (although I think there may be confounding variables, like loudness of the room, the fact that I was up until 1-2am studying/taking the practice tests, etc.). I feel relatively confident in my U.S. history knowledge and Literature is my best subject (I scored a 740 in writing and a 700 in reading on the SAT Is), but I didn’t study as extensively for Literature. If anyone could give me an idea of what I should expect to get on the tests, that would be great! Thanks!

I also used Kaplan for Literature, and it definitely seemed tougher than the CB test. I scored between 690 and 780 on Kaplan, but 790 on the CB test. I would say your teacher is correct in her assessment. Nowhere near an expert, just my 2 cents.