The only people in Mrs. Smith's 1st grade class are children, but they were tall children. So the only people in Mrs. Smith's 1st grade class were tall people.
Thanks for the response guys.I guess I didn't realize there was room for subjective judgement on the LSAT. My impression is that if an attribute is stated, then that attribute holds regardless of it's relativity. This is a tough one to swallow and hopefully I can think that way for the remainder of these practice tests, though I won't be surprised to miss it again