Slam Book Fever — Francine Pascal

Predictions ...
Slam books are the newest craze at Sweet Valley High. They're do-it-yourself books of lists and predictions about everyone in school. They start out as fun but soon stir up big trouble.
First, Jeffrey French, Elizabeth Wakefield's boyfriend, gets paired up with another girl under the category, "Couple of the Future." Then Elizabeth gets matched with the new boy at school, A.J. Morgan--and her twin, Jessica, is furious, because she's the one who's fallen hard for A.J.
Will the mysterious slam-book entries spell the end of happiness for both Elizabeth and Jessica Wakefield?