Q: If a teacher chooses not to enter any assignment grades throughout the class, can the final grade be entered manually anyway?

A: Yes. The final grade can be overwritten by the teacher. As a teacher you could have a blank gradebook except for the final grade entered at the end. 

You can do this by:

  1. Open the Gradebook and in the Published Subtotal space click the edit symbol and enter the grade you would like.