http://www.npr.org/blogs/monkeysee/2013/06/11/190669029/what-kids-are-reading-in-school-and-out
What Kids Are Reading, In School And Out
by LYNN NEARY
National Public Radio
June 11, 2013

Quote
Last year, almost all of the top 40 books read in grades nine through 12 were well below grade level. The most popular books, the three books in The Hunger Games series, were assessed to be at the fifth-grade level.

Last year, for the first time, Renaissance did a separate study to find out what books were being assigned to high school students. "The complexity of texts students are being assigned to read," Stickney says, "has declined by about three grade levels over the past 100 years. A century ago, students were being assigned books with the complexity of around the ninth- or 10th-grade level. But in 2012, the average was around the sixth-grade level."

Most of the assigned books are novels, like To Kill a Mockingbird, Of Mice and Men or Animal Farm. Students even read recent works like The Help and The Notebook. But in 1989, high school students were being assigned works by Sophocles, Shakespeare, Dickens, George Bernard Shaw, Emily Bronte and Edith Wharton.

Now, with the exception of Shakespeare, most classics have dropped off the list.