The #1 asked question: Why can't students see their total score? The Calculated Final Column is hidden from students by default. You must release it after students have added your course for them to see this grade item. Alternatively, you could create a calculated grade item of your own and include all the assignments and assessments in your course -- as long as your activities remained consistent, this could be copied from term to term.
But for most, releasing the calculated column will be simpler. This video shows you how: