Wisconsin Policy Research Institute:

There are some issues that seemingly never change. Twenty years ago 49% of Wisconsin residents thought they had received a better education in elementary and secondary schools than students today. In 2008, 47% of Wisconsin residents had the same view. Twenty years ago 70% of our residents rated their local schools as excellent or very good. Today, 69% rated their local schools as excellent or good.
Twenty years ago 76% of our residents supported merit pay for teachers; today 77% of our residents support merit pay for teachers. Twenty years ago 58% of our residents thought that discipline in our public schools was too lenient; today 60% hold this view.
These are among the key findings about statewide policy issues from the most recent survey of 600 Wisconsin residents conducted by the Wisconsin Policy Research Institute, Inc. and Diversified Research between November 9 and 10, 2008.
The Overall Quality Of Education
47% of the respondents in this survey thought that they had received a better education at the elementary and secondary level than students do today; 44% disagreed. Twenty years ago 49% thought they had received a better education and 45% thought they had not. Demographically there is a large gap in this response based on race–46% of Whites in 2008 thought they had received a better education, but 90% of Black respondents thought they had received a better education and only 10% thought that students today received a better education.

Alan Borsuk has more.