However, it's important to understand the different contexts where "class" is used:
In education: "Class" refers to a group of students taught together. This is probably the most common understanding.
In social science and sociology: "Class" refers to a social grouping based on factors like wealth, income, education, occupation, and social status. This can be further divided into upper class, middle class, working class, and lower class.
In computer programming: "Class" is a blueprint for creating objects. It defines attributes (data) and methods (functions) that objects of that class will have.
In other contexts: "Class" can also be used in a more general sense to refer to a category, type, or level of quality. For example, you might say "a class act" to describe someone with good manners and high standards.
So, while "class" doesn't have a specific full form, its meaning depends on the context in which it is used.