Excellent for younger children
A quick but absorbing read that includes humor, suspense, children who act like real children, and the reality of Nazi regime evil without taking that aspect so far that it's inappropriate for younger children.
My kids loved the courageous and lively nun, Sister Gabriel, who counts on the twenty Christian boys and girls to take in the ten Jewish children in need of refuge. They were pulled into the story immediately through the 13-year-old narrator, Janet, and her brave and clever friend, Henry.
Highly recommended.