Yes, @onedoublethree is right on the mark. S was studying for the SAT and used those books and gave the same reviews as onedoublethree and went from 2100ish Blue Book tests to 2250 real SAT in about a month. Btw, Melzter grammar he gave a 10/10, got a 780 writing, learned to do every math problem in Blue Book and made an addition error on one problem, scored a 770 math.