In Ontario, the Ministry of Education approves what books can be used in schools including English classes and it is called the Trillium List.  The Trillium List is fairly lengthy and teachers can use their professional judgment on what books off the list they want to use.  Teachers can also seek permission to use books that are not on the list but I believe they require approval from their local school board.

I firmly disagree that all students should be reading the same books. You can achieve the same learning objectives about literature by reading diferent books.