Once you have finished grading students' work, you must submit this back to them before it will show up in their Handouts.
Don't forget! you must give an assignment a grade in order to finalize the grading process. Once you have done so and saved the changes, a yellow tab will appear above the assignments giving you the option to 'SUBMIT ALL GRADED'. This allows you to choose between submitting graded assignments as you go, in segments or once you have finished grading assignments for the whole class. Simply tap on 'SUBMIT ALL GRADED' when you are ready and the assignments will instantly find their way back to the students!
You can also finalize grading using the Quick Grade function. Quick Grading gives you the option to return assignments to students without giving a final grade. This is useful for acknowledging that a student has completed an assignment where an evaluative grade is not appropriate, e.g. where the assignment is to read a piece you sent them.