classmate
A person who is in the same school class as you.
A classmate is someone who is in the same class as you at school. Your classmates are the other students sitting in your math class, science lab, or English period. You might have different classmates for different subjects, or if you're in elementary school, you might spend the whole day with the same group of classmates.
Your classmates share your daily school experience: they hear the same lessons, work on similar assignments, and navigate the same teacher's expectations. Over time, some classmates become close friends, while others remain friendly acquaintances you greet in the hallway.
The relationships you build with your classmates often last beyond a single school year. Decades later, adults sometimes reconnect with old classmates and discover how their shared experiences created lasting bonds. Whether you're working together on a science project or competing in a spelling bee, your classmates are part of your educational journey.