Being the middle child has its ups and downs. But for Grace, an only child who was adopted at birth, discovering that she is a middle child is a different ride altogether. After putting her own baby up for adoption, she goes looking for her biological family, including: Maya, her loudmouthed younger bio sister, who has a lot to say about their newfound family ties. And Joaquin, their stoic older bio brother, who has no interest in bonding over their shared biological mother.

Sixteen-year-old Lara Jean Song keeps her love letters in a hatbox her mother gave her. They aren’t love letters that anyone else wrote for her; these are ones she’s written. One for every boy she’s ever loved - five in all. When she writes, she pours out her heart and soul and says all the things she would never say in real life, because her letters are for her eyes only. Until the day her secret letters are mailed, and suddenly, Lara Jean’s love life goes from imaginary to out of control.

Chloe Silver has always been good at looking on the bright side. Even though her parents got divorced and she's moved to a new town, she knows that she will make great friends at her new school. So when she is assigned a science project with offbeat Lucy Tanaka and nerdy Theo Barnes, they have fun creating an experiment that tests out the laws of science through different acts of kindness... officially forming The Kindness Club.

By sixth grade, Miranda and her best friend, Sal, know how to navigate their New York City neighborhood. They know where it's safe to go, like the local grocery store, and they know whom to avoid, like the crazy guy on the corner.

But things start to unravel. Sal gets punched by a new kid for what seems like no reason, and he shuts Miranda out of his life. The apartment key that Miranda's mom keeps hidden for emergencies is stolen. And then Miranda finds a mysterious note.

"I had everything I needed to run a household: A house, food, and a new family. From now on it would just be me and Sammy - the two of us, and no one else". A tragic accident has turned 11-year-old Aubrey’s world upside down. Starting a new life all alone, Aubrey has everything she thinks she needs: SpaghettiOs and Sammy, her new pet fish. She cannot talk about what happened to her. Writing letters is the only thing that feels right to Aubrey, even if no one ever reads them. With the aid of her loving grandmother and new friends, Aubrey learns that she is not alone.

When her best friend and neighbor Margaret comes to her with a problem, Clementine goes to many lengths to help her friend. This sets off a rollicking adventure-filled week that finds Clementine getting into and out of further trouble, while learning valuable life lessons.

The first time she saw him, she flipped. The first time he saw her, he ran. That was the second grade, but not much has changed by the seventh. Juli says, "My Bryce. Still walking around with my first kiss." He says, "It's been six years of strategic avoidance and social discomfort." But in the eighth grade, everything gets turned upside down: Just as Bryce is thinking that there's maybe more to Juli than meets the eye, she's thinking that he's not quite all he seemed.

When 13-year-old Mia finally reveals a closely-guarded secret, it soon echoes throughout her school. She was born with synesthesia, a neurological cross-wiring that lets her see sounds, taste shapes, and smell colors. To Mia, the letter A glows with faded sunflower-yellow, screeching chalk sizzles with jagged red sparks, and her cat's voice puffs with orange-mango haze. How can Mia "the alien" find acceptance and self-worth?

Though he thinks of himself as a cowboy, Tommy is really a bully. He's always playing cruel jokes on classmates or stealing from the store. But Tommy has a reason: life at home is tough. His abusive mother isn't well; in fact, she may be mentally ill, and his sister, Mary Lou, is in the hospital badly burned from doing a chore it was really Tommy's turn to do. To make amends, Tommy takes over Mary Lou's paper route.

Carley uses humor and street smarts to keep her emotional walls high and thick. But the day she becomes a foster child and moves in with the Murphys, she's blindsided. This loving, bustling family shows Carley the stable family life she never thought existed, and she feels like an alien in their cookie-cutter-perfect household.

Elise and Franklin have always been best friends. Elise has always lived in the big house with her loving Uncle and Aunt, because Elise's parents died when she was too young to remember them. There's always been a barn behind the house with eight locked doors on the second floor. When Elise and Franklin start middle school, things feel all wrong. Bullying. Not fitting in. Franklin suddenly seems babyish. Then, soon after her 12th birthday, Elise receives a mysterious key left for her by her father. A key that unlocks one of the eight doors upstairs in the bar...

Amanda is reliving her 11th birthday over and over again - even the fight with her best friend, Leo. How can she fix everything and put the day behind her? Only time, friendship, and luck will tell.

As befits a future President of the United States of America, Maggie Mayfield has decided to write a memoir of the past year of her life. And what a banner year it's been! During this period she's Student of the Month on a regular basis, an official shareholder of Coca-Cola stock, and defending Science Fair champion. Most importantly, though, this is the year Maggie has to pull up her bootstraps (the family motto) and finally learn why her cool-dude dad is in a wheelchair, no matter how scary that is.

Bridge is an accident survivor who's wondering why she's still alive. Emily has new curves and an almost-boyfriend who wants a certain kind of picture. Tabitha sees through everybody's games - or so she tells the world. The three girls are best friends with one rule: no fighting. Can it get them through seventh grade?

When Ari's mother died four years ago, she had two final wishes: that Ari and her older brother, Gage, would stay together always, and that Ari would go to Carter, the middle school for gifted students. So when eighteen-year-old Gage decided he could no longer live with their bossy guardian, Janna, Ari knew she had to go with him - even though she'd miss baking cookies with Janna and curling up to watch HGTV. What Ari didn't realize was that Gage didn't have an apartment yet.