The stimulus text limits the candidate’s main conclusion that her opponent’s position is incorrect. It acknowledges that her opponent’s position is somewhat correct, which undermines the main conclusion rather than supporting it.

This incorrectly labels the stimulus text as context. The stimulus text is a concession the candidate makes to her opponent, acknowledging that her opponent’s position is somewhat correct. The stimulus text does not illustrate a problem that needs correcting.

The stimulus text does not support this contention. Instead, it limits the candidate’s contention that too much blame is being placed on schools; it does not support it. The final sentence is the premise that supports the conclusion that too much blame is being placed on schools.

The stimulus text expresses the candidate’s belief that schools need reform, but it does not go so far as to discuss how the failings of the school system are partially responsible for society’s problems.

In the stimulus text, the candidate concedes that her opponent is partially correct: the schools need reform. Thus, the text is a limited concession the candidate makes “in the context of” disagreeing with her opponent’s position.