The NCES web site is an abundant source of education data and statistics. Just one example of elegant web delivery of statistical information from their site is the State Education Data Profiles. Each results page offers download and graphing options.
Search for statewide information in elementary/secondary education characteristics and finance, postsecondary education, public libraries, assessments, and selected demographics for all states.
Use the dropdown box or the map of the United States to select up to 4 states to compare. You will also get data on U.S. averages and the ability to graph the results.