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About word ranking

Academic words in each book are ranked according to four main criteria:

How often they are used in the book
Relative to the book's reading level, how commonly they are used generally
How often they appear on review lists for standarized tests like the ACT^® & SAT^®
How memorable and exemplary their usage is within the story

Quiz Status: Edited🌟

The computer does a reasonable job of selecting words, sample sentences, and wrong answers, but quizzes are better when edited by a human.

Let us know if you need one of the unedited books optimized for a class. Also, if there's a word we should add to a book's quiz, tell us which word (and preferably which word to remove to make room for it).