In your year, kids are growing up at completely different speeds. A boy called Tom shot up over the summer and now towers over everyone — adults treat him like he's much older, and he hates it. A girl called Priya is the smallest in the class and gets babied, even though she's the same age as everyone else. Meanwhile some kids' voices are changing, some aren't. Some look almost like teenagers, some still look like little kids. And everyone is quietly, constantly comparing — am I normal? Am I behind? Am I ahead? Nobody really talks about it. But you can tell almost everyone is thinking about it.