What Is a Prerequisite? Prerequisites, or pre reqs for short, are specific courses or subjects that you need to take (and get a passing grade in) before you can take higher-level courses in that same subject.

What is a pre req?

A prerequisite means a course or other requirement that a student must have taken prior to enrolling in a specific course or program. A corequisite means a course or other requirement that a student must take at the same time as another course or requirement.

What is an example of prerequisite?

Required as a prior condition of something else; necessary or indispensable. The definition of a prerequisite is something that must happen first, or that is a condition of something else occurring. An example of a prerequisite is the requirement that you have money before you can buy something.