As a former English teacher and a mother who has raised three successful members of society, I believe that parents need to be open to the readings assigned to their students.
Fear is what drives people to say no to literature—fear and the need for control.
Allowing your children exposure under the watchful eyes of teachers is the best way for them to develop their own opinions. And they will do so no matter what you do.
You must allow them to live in this culture and to draw their own opinions....