If you have the book but are unsure how to interpret your score, here is the standard scaling for the revised exam.
Listening Section (Part 1, 2, & 3)
GCVR Section (Grammar, Cloze, Vocabulary, Reading) If you have the book but are unsure
Q1: My Book 2 answers don’t match the online key I found. Why?
Q2: Where can I find explanations for the answers, not just the letter? GCVR Section (Grammar, Cloze, Vocabulary, Reading)
Q3: Does Book 2 include answer sheets for practice?
Q4: How many times should I retake a test using the answer key? Q1: My Book 2 answers don’t match the online key I found
Yes. Old format answers often had “A, B, C, D” with no further comment. The 2021 format answers provide rationales, especially for the cloze and listening sections, explaining why a distractor is wrong.