Trulia Voices: why are the tax assesments going up so much in castile when last year they hit 100% full asst.?

Trulia Voices: why are the tax assesments going up so much in castile when last year they hit 100% full asst.?http://www.trulia.com/voices/Home_Buying/why_are_the_tax_assesments_going_up_so_much_in_cas-26064en-us