DC Property Tax Assesment

I got my DC property tax assessment and am wondering what others think about this?  My property value went up even though it seems all property values should be dropping.  I am wondering if I should challenge it.  Do you have any thoughts?

PSA 501 Crime report

A posting from the MPD 5D Yahoo Group. PSA: 501 CCN: 09028726 RPT DATE: Mar  3 2009 12:00AM SHIFT: DAY OFFENSE: Robbery METHOD: F&V BLOCK: 1300 B/O NEW JERSEY AVE NW LOCATION: Public/Private School START DT: 03/03/2009 START TM: 13:40:00 END DT: 03/03/2009