In my free ebook Google for Teachers I included directions for creating and publishing a quiz using Google Documents forms. Recently, Dr. Mark Wagner published a blog post that includes directions for creating formulas that will result in quizzes created in Google Docs forms being self-graded. His post includes a video screencast and slides. I’ve embedded the video below.

Grading quizzes can be a tedious task if you have many students on your roster. Creating and administering quizzes through Google Documents forms can save you time and save paper at the same time. By saving time on grading you can give students feedback quicker than before.

Here are some related items that may be of interest to you:
5 Tools to Create and Administer Quizzes Online
47 Alternatives to Using YouTube in the Classroom
Google for Teachers II – Free Ebook