Prerequisite courses are classes that students must complete before enrolling in a more advanced course. These foundational courses ensure that students have the necessary knowledge and skills to succeed in higher-level classes. For example, a student may need to take a basic mathematics course before advancing to calculus. Prerequisites are common in many academic programs, including college and university degrees. They help maintain academic standards and prepare students for the challenges of their chosen field. By completing prerequisite courses, students can build a strong foundation for their future studies and career paths.