Clear my doubt, please

[murli_18@yahoo.com]

My daughter's class teacher wrote on a piece of paper marking to parents saying that " I am sending one of the child's copies (notebooks) to compare with that of your daughter ". She sent only one notebook of other student. She means she sends one of my daughter's classmates notebooks to us to compare.

Is that sentence right? Should it not be children instead of child? Or one is to notebooks?

Kindly sharpen my knowledge.

Murli

[Tdol]

To me, her sentence means that she is sending one book from a single child, who has a number of books, so it's one example from one child, a child we should know because she says 'the child's'.
If, as you suggest, she means one book taken from one of the class, then it should be 'children's'.