Formal:
* You have to do in [class name] class.
* You are required to do in [class name] class.
* The tasks you need to complete in [class name] class are...
Informal:
* What you have to do in [class name] class is...
* You gotta do in [class name] class...
* What you're expected to do in [class name] class is...
Example:
* Spanish: Tienes que hacer en la clase de español.
* English: You have to do in Spanish class. / You are required to do in Spanish class. / What you have to do in Spanish class is...
You can also use a verb phrase instead of "do" if you want to be more specific. For example:
* You have to write an essay in English class.
* You are required to read a chapter in history class.
* You gotta practice your pronunciation in French class.
Remember to replace "[class name]" with the actual class name.