Elizabeth is a math whiz, with a penchant for wearing Victorian dresses, writing poetry, and imagining that she would be better off in the time of Emily Dickinson. Her quirkiness gets her labeled as a "nerd" by her classmates, but her academically-minded parents don't get Lizzie's desire to become "normal" and popular as she enters seventh-grade.
It's a bit of a hackneyed plot, with the predictable self-discovery at the end that has Lizzie deciding to be true to herslef rather than what people want her to be. However, it's lightened on the way by Mills's ability to recreate Junior High in wonderful technicolor. Again, the book suffers from being written in the third person, but Lizzie emerges nonetheless as a three dimensional character, albeit a bit of a stereotype.
Still, anyone who grew up quirky (like me) will appreciate some degree of familiarity in Lizzie's personality.
The book itself is part of a series which includes stories of several of her classmates as well. That is bound to be fun, but a bit lost on me as I'm joining the series mid-way.