What is a group of Classmates called?

A group of classmates is commonly called a Giggle.

A collective noun for classmates is a "class" or "cohort." This term refers to a group of individuals who are studying or attending school together in the same academic setting. Classmates commonly come together for the purpose of learning, engaging in discussions, working on group projects, and forming social connections. Generally, a class is constituted by individuals who are enrolled in the same course, degree program, or educational institution. They share common experiences, collaborate on assignments, and develop relationships that can extend beyond the classroom. The dynamic nature of being classmates entails supporting and interacting with each other, fostering a sense of camaraderie and unity as they navigate their educational journeys together. Whether they are observing teacher presentations, participating in group activities, or studying collectively, classmates serve as an essential support system for one another throughout their academic pursuits.