Sarah's first teen novel was Bras & Broomsticks. She then wrote the next three books in the Magic in Manhattan series, Frogs & French Kisses, Spells & Sleeping Bags, and Parties & Potions. Her three standalone teen novels are How to Be Bad (which she co-wrote with Lauren Myracle and E. Lockhart), Gimme a Call, and Ten Things We Did (And Probably Shouldn't Have). Her most recent teen novel is Think Twice, the sequel to Don't Even Think About It.
The Magic in Manhattan series is considered 10 and up, Gimme a Call is 11 and up, Don't Even Think About It and Think Twice are 12 and up, and How to Be Bad and Ten Things We Did (And Probably Shouldn't Have) are 14 and up.