Tax Calculator. I received a note from my contact inside the Schundler campaign, with some explanation of how his calculator works. Basically, it figures the additional state funding to be provided to your school district, municipality, and county based on the legislation he proposes, subtracts that amount from the property tax levy, then recalculates your tax based on your 2004 bill and the new, reduced rate. As Enlighten-NJ pointed out in comments to the earlier item, all of the records used are public, and my contact assures me that nothing other than the public record is in the database.
I hope that Schundler's people can make my world a happy one on this issue.They have succeeded.