A number of readers have asked for the states that generate 80% of all due process cases. My numbers may be old, but I suspect that they are still valid. According to the GAO study, the key states are Washington, DC (by far the league leader in these stats), California, New York, New Jersey, Pennsylvania and Maryland. I believe the current statistics are comparable, although you have to be very patient to dig them out. Here's a link.
Thanks for the great questions and responses. In the next post in this series, I'll take a look at some possible changes in the due process hearing system.