I read these in 2-3 sittings to my son as we are both big TMNT fans. They're the exact stories (right down to the dialogue and art) as the show episodes. For kids who crave repetition and predictability that's actually pretty awesome and it a great learning-to-read strategy. For grown ups who enjoy ninja turtles, it's not so fun. For him: A. For me: D. For me as a mom watching him laugh and read: A+.