2240 - 730R, 800M, 710W (8 essay) - last test, the first one was 2070 (690R 780M 600W)
Started preparing in August, took the last test in January.
I am an international, so it was quite hard for me to reach this score. I hope it was worth it and I will get in…
I used a lot of books and practice tests.
For writing - Erica Meltzer’s the ultimate guide to sat grammar is what helped me to raise my writing score by 110
For reading - I tried all books I could find. First, I read princeton review, but I realized that it was not enough, and looked through all the books I could find. A strategy from one book may be good for one person but inefficient for the other, so make sure to try a lot of different approaches (this applies not only to reading).
For math - personally for me, it was awfully easy, even boring (I also did some contests in HS), the worst part was not to make any stupid mistakes in calculations (and to understand the statements correctly), I got 800 only on the 3rd try.
And the Master Key for everything - practice the hell out of them tests.