What Should Kids Read?

Everybody seems to have an opinion on the matter.  First, there was this report by Renaissance Learning (of AR fame), which showed the book levels per the ATOS scale from students who are using AR in grades 1-12.  The report has opinion pieces from several different YA authors like Dan Gutman and Dave Pilkey, one of the authors of the Common Core Standards, as well as a librarian.  Renaissance thought only to give one teacher a voice in the discussion.  Sandra Stotsky, Professor of Education Reform,  University of Arkansas added her opinion in the New York Daily News.  Finally, Robert Pondiscio chimed in at the Core Knowledge Blog.  Of course the Common Core Standards have answered the question by telling us that students should be reading a lot more non-fiction, an idea that I think has a lot of merit.  So, what should students be reading?  Where is the proper balance between student choice and teacher choice?