Sweet Valley Junior High #10: Twin Switch

Kristen asks Jessica to join her Homecoming Poster Committee, and Jessica agrees because she's still worried that she has no friends. Since Kristen is popular, she thinks that it might make her a little popular too. The next day, she shows up at school with four posters that actually seem pretty cute. There's a bunch of cats (wildcats) throwing glittery nets over dolphins (the other team) with phrases like "kill the dolphins" across the top. Unfortunately, one of the school's science teachers just read an article about dolphin slaying and vowed to make a stand. She drags Jessica and her posters into the principal's office, who clearly has no clue why these are bad until she tells him. Jess points out that it's the name of the other team, and the teacher gets embarrassed for not knowing. The principal initially gives her a week of detention, but then he decides to put her in charge of the dance since the girl who was going to do it suddenly moved...