From the American Association for the Advancement of Science

This is an outstanding, free resource for science teachers: http://assessment.aaas.org/topics
Click on a topic to get key ideas.  Click on a key idea to get sub ideas AND a list of typical misconceptions.  As Jay McTighe noted in his 9/23/10 tweet, "...a science misconception database.
An excellent source to inform and guide pre- and formative assessments. Please share this with all secondary teachers!"