A more thorough explanation:

A class is a group of people or things that share one or more common characteristics. In a legal context, a class refers to all the people who are in the same category, have the same rights, or have suffered from the same incident.

• A class of students in a school can be defined by their grade level or subject.
• A class of cars can be defined by their make or model.
• A class of workers can be defined by their job title or department.
• A class of people who have been affected by a natural disaster can be defined by their location or type of damage.
• A class of people who have been injured in a car accident can be defined by the type of injury or the circumstances of the accident.

These examples illustrate how a class can be defined by a common characteristic or experience. In each case, the members of the class share something in common that distinguishes them from other groups.