I need an Entity Relationship Diagram (ERD) drawn (table names and Primary Key with relationships) with LucidChart of a similar tool from the following text:

"A teacher wants to track student performance in his class. The class can have 2 or more students and the student performance in graded activities is captured to determine the students' final grade.:

I need the optional/mandatory parts of the relationship captured as well as the diagram annotated with the assumptions you are making to support the ERD. I'm quite confused so it would be quite helpful, thanks! Please submit an actual diagram.