In high school, you have 2 main categories of classes: Core classes, and electives.

Core classes are types of classes that you have to take in order to get a high school diploma: Math, Science, English, and Social Science classes.

Elective classes are classes that you can choose to take for fun, such as Art, Choir, Orchestra, or Theatre(And many more).

Schools will require you to take some form of elective class to graduate, but they will offer a wide variety of electives for students to choose from.

For more information on the wide variety of elective classes available at your school, there will be a course guide provided by your school that will list all the classes they offer, what type of class they are, and what each class entails.