The statement from the excerpt that is a claim is A. Some schools have seen that too much homework is a bad idea.
This refers to the statement or assertion about a thing that is yet to be proved and needs to be validated with supporting details.
Hence, we can see that from the given excerpt and answer choices given, there is the narration of the homework given to the students and the claim used is that some schools have seen that too much homework is a bad idea.
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