NEW ORLEANS - A Louisiana appeals panel on June 13 affirmed a lower court's ruling that two excess insurance policies unambiguously exclude coverage for a school board insured's flood losses and damage arising from Hurricane Katrina (Orleans Parish School Board v. Lexington Insurance Company, et al., No. 2011-CA-1753, La. App., 4th Cir.; 2012 La. App. LEXIS 855).