Grading definitely takes up most of my time. I think it's critical to make sure that each student is thoroughly comprehending the course material so I spend time (sometimes too much) analyzing assignments and providing feedback. I have found that there are some great programs out there that help with cutting time when grading. One program is Grade Assist. It allows you to create suggestion boxes to add to the corrections based on the given assignment. Rather than having to type out the same correction multiple times, the comment is saved to just click and add immediately.