Formal:
* Class: This is the most common and straightforward term, referring to a group of students who share a teacher and subject.
* Cohort: This term is often used for a group of students who entered a program or school at the same time.
* Student body: This refers to the entire group of students at a particular school.
* Pupils: This is a more formal term, often used in the context of younger students.
* Learners: This emphasizes the students' role as active participants in the learning process.
Informal:
* The gang: A casual and friendly term for a group of close friends who are students.
* The crew: Similar to "the gang," but may be used for a larger group of students.
* The squad: A more modern term, typically used by students themselves to describe their group of friends.
Specific:
* The graduating class: This refers to the group of students who are completing their studies at a particular time.
* The debate team: This describes a group of students who participate in debates.
* The soccer team: This describes a group of students who play soccer together.
The best term to use will depend on the specific situation and your desired level of formality.