Margaret Simon, almost 12, has just moved from New York City to the suburbs, and she’s anxious to fit in with her new friends. When she’s asked to join a secret club, she jumps at the chance. But when the girls start talking about boys, bras, and getting their first periods, Margaret starts to wonder if she’s normal. There are some things about growing up that are hard for her to talk about, even with her friends. Lucky for Margaret, she’s got someone else to confide in...someone who always listens.

Logan Foster has pretty much given up on the idea of ever being adopted. It could have something to with his awkward manner, his photographic memory, or his affection for reciting curious facts, but whatever the cause, Logan and his “PP’s” (prospective parents) have never clicked. Then everything changes when Gil and Margie arrive. Although they aren’t exactly perfect themselves—Gil has the punniest sense of humor and Margie’s cooking would have anyone running for the hills—they genuinely seem to care.

For nine-year-old Abby McAdams, everything seems to be changing. Her cousin and best friend, Zoe, has moved across the country, her mom is going back to work, and Abby is stuck in the only after-school activity still available—running—which she absolutely loathes. Her perspective on the world is changing, too, after an encounter in her community sheds light on the issue of homelessness in her town

Molly Frost is fed up.... Because Olivia was yelled at for wearing a tank top. Because Liza got dress coded and Molly didn't, even though they were wearing the exact same outfit. Because when Jessica was pulled over by the principal and missed a math quiz, her teacher gave her an F. Because it's impossible to find shorts that are longer than her fingertips. Because girls' bodies are not a distraction. Because middle school is hard enough.

Mia Tang has a lot of secrets. Number one: She lives in a motel, not a big house. Every day, while her immigrant parents clean the rooms, 10-year-old Mia manages the front desk of the Calivista Motel and tends to its guests. Number two: Her parents hide immigrants. And if the mean motel owner, Mr. Yao, finds out they've been letting them stay in the empty rooms for free, the Tangs will be doomed. Number three: She wants to be a writer. But how can she when her mom thinks she should stick to math because English is not her first language?

Isaac and Marco already know sixth grade is going to change their lives. But it won’t change things at home—not without each other’s help. This year, star basketball player Isaac plans on finally keeping up with his schoolwork. Better grades will surely stop Isaac’s parents from arguing all the time. Meanwhile, straight-A Marco vows on finally winning his father’s approval by earning a spot on the school’s basketball team. But will their friendship and support for each other be enough to keep the two boys from falling short?

Jen did not want to leave the city. She did not want to move to a farm with her mom and her mom's new boyfriend, Walter. She did not want to leave her friends and her dad. Most of all, Jen did not want to get new "sisters", Andy and Reese. As if learning new chores on Peapod Farm wasn't hard enough, having to deal with perfect-at-everything Andy might be the last straw for Jen. Besides cleaning the chicken coop, trying to keep up with the customers at the local farmers' market, and missing her old life, Jen has to deal with her own insecurities about this new family.

Waverly Lyons has been caught in the middle of her parents’ divorce for as long as she can remember. This summer, the battle rages over who she’ll spend her vacation with, and when Waverly’s options are shot down, it’s bye-bye Fairbanks, Alaska, and hello Holden, Florida, to stay with her aunt. Coming from the tundra of the north, the beach culture isn’t exactly Waverly’s forte. The sun may just be her mortal enemy, and her vibe is decidedly not chill. To top it off? Her ability to swim is nonexistent.

Lucy Callahan was struck by lightning. She doesn't remember it, but it changed her life forever. The zap gave her genius-level math skills, and ever since, Lucy has been homeschooled. Now, at 12 years old, she's technically ready for college. She just has to pass 1 more test--middle school!

Ever since Ellie wore a whale swimsuit and made a big splash at her fifth-birthday party, she's been bullied about her weight. To cope, she tries to live by the Fat Girl Rules - like "no making waves", "avoid eating in public", and "don't move so fast that your body jiggles". And she's found her safe space - her swimming pool - where she feels weightless in a fat-obsessed world. In the water, she can stretch herself out like a starfish and take up all the room she wants. It's also where she can get away from her mom, who thinks criticizing Ellie's weight will motivate her to diet.

Five students meet in the school cafeteria when they're forced to complete their school community service hours. There's George: the brain. Sara: the loner. Dayara: the tough kid. Nico: the rich kid. And Miguel, the jock. They immediately know that they have nothing in common with each other... even though their school administration has decided that they all belong together.

Fourteen-year-old Mona isn't like the wizards charged with defending the city. She can't control lightning or speak to water. Her familiar is a sourdough starter, and her magic only works on bread. She has a comfortable life in her aunt's bakery making gingerbread men dance. But Mona's life is turned upside down when she finds a dead body on the bakery floor. An assassin is stalking the streets of Mona's city, preying on magic folk, and it appears that Mona is his next target. And in an embattled city suddenly bereft of wizards, the assassin may be the least of Mona's worries.

Maizy has never been to Last Chance, Minnesota . . . until now. Her mom’s plan is just to stay for a couple weeks, until her grandfather gets better. But plans change, and as Maizy spends more time in Last Chance and at the Golden Palace—the restaurant that’s been in her family for generations—she makes some discoveries. But the more Maizy discovers, the more questions she has.

Twelve-year-old June Delancey is kicking summer off with a bang. She shaves her head and sets two goals: she will beat her anxiety and be the lion she knows she can be, instead of the mouse everyone sees. And she and her single mama will own their power as fierce, independent females. With the help of Homer Juarez, the poetry-citing soccer star who believes in June even when she doesn’t believe in herself, she starts a secret library garden and hatches a plan to make her dreams come true. But when her anxiety becomes too much, everything begins to fall apart.

Winnie Perry went through a lot when she was 11, from shifting friendships to her teenage sister's mood swings. But now that Winnie is 12, and one step closer to being a teenager herself, there is so much more to deal with. Will her new friendship with Dinah last? Can she handle the pressures of junior high? And, most important, will Winnie survive bra shopping (in public!) with Mom?