Dav ##ros 's ` ` Captain Underpants '' series tops list of most challenged books again . Marc Alexie , Toni Morrison and John Green are other challenged authors on top 10 list . ` ` A Bad Boy Can Be Good for a Girl '' by Tanya Lee Stone appears for first time on list . List of challenges published as part of Banned Books Week .
Dav Pilkey 's `` Captain Underpants '' series tops list of most challenged books again . Sherman Alexie , Toni Morrison and John Green are other repeat authors on top 10 list . `` A Bad Boy Can Be Good for a Girl '' by Tanya Lee Stone appears for first time on list . List of challenges compiled as part of Banned Books Week .