Is there any way to fill all scores in a column at once? I would like the ability to fill the same grade for all students in a column, and then go back and edit a few outliers if needed.

Thanks!

Sure, fill any cell and long tap or right click on it > Copy > Copy to all column as shown in the image below


If it is something you're doing quite often, you can configure a favorite column (add column > Favorite) and define prefilled icons and scores
that will be added automatically as you add those favorite columns to your gradebook