It was Tuesday morning when Daisy walked into the gym for her first PE class. The huge space buzzed with energy basketballs bouncing, sneakers squeaking, a whistle blowing sharply in the distance. Her PE uniform felt stiff against her skin, the fabric unfamiliar, the logo too new.

She held her schedule tightly and looked around. Everyone seemed to already know what to do, girls in tight ponytails, boys half-joking while jogging in place, warm-ups already underway. Daisy took a quiet breath and followed a group of girls heading toward the locker room.

Inside, the noise dropped a little. Girls laughed and changed quickly, talking about classes and teachers and who...