As Pax says, a wise person once remarked, "The best way to get a kid to read a book is to ban it."
I have seen first hand evidence of this myself.
Several years ago, one parent objected when the book Lisa, Bright and Dark was assigned to her kid's high school class here. The school debated what to do about it, and in a show of moderate intelligence, took the book off the list of candidates for assigned reading. They did NOT, however, remove the book from the high school library. They did not take it away completely.
My niece assured me that for the next couple of months you couldn't really check the book out from the high school library--because so many kids were on the reserve list and you would have to wait forever. For the next couple of months, the book was also constantly checked out from both of our public libraries, too.