* 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, 2017
Permanent Link: http://data.sagepub.com/sagestats/15992
General Notes: A - symbol represents data that is not available. Data represents percent of high school students who were threatened or injured with a weapon on school property (such as, a gun, knife, or club, one or more times during the 12 months before the survey).