* Use caution when using percent change to describe differences between years as they can be very misleading when prevalence estimates are not taken into account.
Cities for this data series are based on the large urban school districts the CDC surveys. The CDC Youth Risk Behavior Surveillance survey is conducted on a biennially basis.
Years Available: 1993, 1995, 1997, 1999, 2001, 2003, 2005, 2007, 2009, 2011, 2013, 2015
Permanent Link: http://data.sagepub.com/sagestats/15844
General Notes: A - symbol represents data that is not available. Data represents percent of high school students who have carried weapons such as a gun, knife, or club on at least 1 day during the 30 days before the survey.