various classes

et cetera

(software engineering) class diagram - A type of static structure diagram that describes the structure of a system by showing the system's classes, their attributes, and the relationships between the classes.

(education) class (group of students in a regularly scheduled meeting with a teacher) / class of things (typically products) sharing certain features / (programming, object-oriented programming) class

et cetera, etc.; and so on / at last, finally

various / many / several / together

various, all the

these

school (institution dedicated to teaching and learning)

rank, class, order / et cetera, that kind of thing, and so on