Discussions about taxation often focus on the privileges and responsibilities of the upper classes.

The new policies failed to address the needs of the working classes, leaving many families struggling.

The conference offered workshops specifically tailored to the needs of professional classes across multiple industries.

When composing atonal music, she mapped out the relationships between pitch classes to ensure a balanced distribution.

When defining a relation on a set, equivalence classes help organize elements that are related by that relation.

I arranged my schedule so I could attend all my school classes and still have time to study.

The chattering classes debated the policy at the university forum, but ordinary voters remained unconvinced.

Balancing character classes is one of the most difficult tasks in game design.

During the workshop, the linguist demonstrated how form classes influence sentence structure across languages.

In our framework, abstract classes define the common interface that concrete subclasses must implement.