The class secretaries are responsible for organizing class events.

Concrete classes are used to create objects in object-oriented programming.

In object-oriented programming, derived classes are created by inheriting properties and behaviors from a base class.

The first classes of the day are always the most challenging.

Generic classes are used to define a blueprint for creating objects of a specific type.

The interval classes in this music theory course are challenging.

I attended several master classes to improve my skills.

There are several member classes in the programming language.

The residue classes modulo 5 are {0, 1, 2, 3, 4}.

There are several spectral classes in the Hertzsprung-Russell diagram.