This "Motivational Poster" style commentary on school prayer has been making the rounds on teh interwebs. It started as part of a "Student Witch" series by photographer Marcus J. Ranum. You can see the whole series at Ranum's DeviantArt gallery here.
(Ranum's wikipedia entry tells us that he is a computer security expert of some note and that "his hobbies include photography and firearms.")
I would like to find out whose idea it was to add the eleven words to Ranum's already quite magnificent photo, thus taking it to the next level of brilliance!
The book she is holding is Aleister Crowley's "Magic in Theory and Practice", which you can make out if you look at the full size image of the original. The book on the ground is something by Anton LeVay.
Ranum, who is an atheist and a supporter of Richard Dawkin's "Out Campaign", has this to say about inclusion of the LeVay book as a prop in the original photograph:
Someone mentioned (rightly and courteously) that I might have given offense by mixing the word "witch" with LaVey's goofy satanic bible. It's just a prop. I was tempted to fix the title but then I realized that would be inconsistent. As an equal opportunity disrespector of all religion, it would be unfair of me to show wicca more respect than I show any of the other goofy superstitions of the world. So, with all due respect, if this image bothers you - "get over it."
[Since first posting this I have received direct confirmation from Laura Unbound that it is her. She also left a comment below.]