Darker colors represent higher rates for students suspended or expelled for weapons incidents during the 2010-11 school year, the most recent numbers available. Click on each district on the map for more detailed numbers.
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Also from: CNN
10 ways to put brakes on mass shootings in schools
A gunman opened fire Friday in a Connecticut elementary school, killing 26 people, 20 of them children, police said. It was one of the deadliest school shootings in U.S. history.
Readers posted more than 2,000 comments in response to questions we asked them in a story examining immediate shock and anger surrounding the incident. They looked at what problems might be involved and how society might go about solving them. Here are 10 of the most popular suggestions.
see the 10 ways