It depends on the student, their ability, and perhaps their age. There are certain of my students that I know I have to double-check to see if they actually did all of it and if it was done correctly. Since these are first graders and they are just learning to be independent workers, I take it as part of teaching them to be responsible. However, when I know it is laziness or carelessness that kept them from doing their job well; they often have to finish/fix it at recess. So far that’s been a sufficient consequence that lasts a few days.
If you find the key to solving this problem let me know. We’ve battled this out with several students for all of their school years and even with parents on board and nearly needing to repeat a grade because of careless work habits, it is still an issue. It seems that for any gains to be made one must be consistent at all times. As soon as the teacher lets it go one time, the student is looking for the next loop hole. It’s a little like the boy who always came to the table with unwashed hands. His mother always made him go wash them. One time she asked him why he doesn’t just wash them first because she’s going to tell him to do so. His reply, “Well, one time you didn’t.”