Question: A local school board was concerned with the high rate of turnover among its teaching staff in the three district high schools. To address this problem, the board decided to implement policies that would provide teachers more control over the curriculum. In the spring of 1999 the board took an informal survey to assess the degree of satisfaction teachers had with their jobs. The new policies were then implemented in fall of 2000. In late spring of 2001 the survey was then re-administered to the same teachers. Is there any evidence that teachers displayed more satisfaction after implementation of the new policies?

Note. Higher scores on satisfaction scale indicate more satisfaction, and scores range from low (score of 1) to high (score of 10).