* Mature themes and controversial topics: The book deals with sensitive issues like childhood cancer, medical ethics, parental rights, and the complex relationship between siblings. Some parents and school boards felt the content was inappropriate for younger students.
* Ethical considerations: The book explores the ethical dilemma of using a child for medical purposes against their will. This topic sparked debate and concern amongst some educators and parents, questioning whether the book was appropriate for the intended audience.
* Language and sexual references: While not explicit, the book contains some language and references to sexual activity that some considered unsuitable for certain age groups.
It's important to note that challenges are not the same as bans. A challenge simply means someone raised an objection to the book, but it doesn't automatically mean it was removed from school libraries or curriculum. Schools often hold discussions and review processes before making a decision.
Ultimately, the decision on whether or not to include *My Sister's Keeper* in a school library or curriculum is left to individual schools and districts. It's a complex issue that involves considerations of age-appropriateness, educational value, and parental concerns.