SchoolDataDirect.org

The sponsors of SchoolDataDirect include the Bill & Melinda Gates Foundation and the Council of Chief State School Officers. The site lets you browse and download a wealth of education data -- including test scores, finances and demographics down to individual schools -- and promises to always have the most current data available. You can also compare schools to each other -- not just on blunt measures like overall test scores, but also how well they perform with special needs kids, English language learners and kids with disabilities. Disappointing to me, however, is that it appears to prohibit newspapers from using the data en masse:

If you are not associated with an academic institution or nonprofit organization you may only reproduce, distribute, display, or transmit de minimus amounts of Education Data on an infrequent basis and only for noncommercial purposes.