Patricia, I'm glad you bring up the point about plagiarism. When we are concerned about it, grading takes significantly longer than usual. Some are some good online tools that can potentially help. Also, I have always admired the power of Google in helping out with this kind of grading. When I type in a sentence from a student's paper that I think is plagiarized, Google can usually bring it right up if it has in fact been plagiarized.
Dr. Melissa Read