Smoke two joints and write a rambling epic about the winders of MJ. Tell the teacher while you did lots of research, it just wasn't the book kind -- and that you're feeling much better. They'll understand.

or Try these links

http://www.norml.org/index.cfm?Group_ID=4516
http://www.treatingyourself.com/vbulletin/index.php

Also, try using google with the keywords "medical marijuana research". Lot's of links from there