If you have the time to do a little digging at a reasonably decent library, my recommendations for pro-creationism books include "Icons of Evolution" by once-and-future scientist and devotee of Sun Myung Moon Jonathan Wells (for the YEC perspective), and "Darwin's Black Box" by Michael Behe (for the ID perspective). Both books are very readable. (Obviously - they're designed to convince people who have no idea about science. An objective at which they have been unfortunately exceptionally successful.) THEN go to Nik Tamzek's superb talkorigins.org article
"Icons of Obfuscation" and John Catalano's website
"Behe's Empty Box". For more background, see if you can dig up the article Michael F. Antolin and Joan M. Herbers, 2001, "Perspective: Evolution's Struggle for Existence in America's Public Schools", from the journal
Evolution (Vol. 55, No. 12, pp. 2379—2388). The article will give you a great deal of information, as well as a long list of additional resources.
Hope this helps. Good luck on your essay. Post it here if you get the chance.