GMAT
The principal of School X has proposed a plan that would add an hour-long study period to the end of the school day. She claims that the extension would improve the school`s average score on the math section of the state assessment by allowing students more time to complete math homework that they wouldn`t otherwise have time to complete. Which of the following statements, if true, would most weaken the argument presented above?
【选项】Math teachers of students in School X have noted an overall decline in the number of homework assignments completed by students since the school eliminated midday study periods two years ago.
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