Insight on the choices Lanza made as the lone gunman at Sandy Hook Elementary School.


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Read more: Watch: New Details of Gunman Adam Lanza's Movement Inside School

ABC's Juju Chang on how to ease children into a new school week, following deadly school shooting.


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Read more: Watch: Parents Across the Nation Console Children on Eve of New School Day

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Read more: Obama Visits Families of Conn. Shooting Victims

Kate Middleton attends UK sports awards show, first public engagement since hospitalization


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Read more: Kate Middleton Attends UK Sports Awards Show

Peter Jackson's 'The Hobbit' tops box office with $84.8 million, opening bests 'Rings' films


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Read more: 'Hobbit' Has Record-Setting Opening

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Read more: Conn. Shooter Had Hundreds of Rounds

Adam Lanza, the 20-year-old who killed 20 children and six adults in a rampage at a Connecticut elementary school, took six classes at Western Connecticut State University in 2008 and 2009, beginning when he was just 16, and had a grade point average of 3.26.


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Read more: School Shooter Attended College Classes as 16-Year-Old

Along with fire drills, schools have been conducting lock down drills -- often known as active shooter drills -- since the Columbine massacre in 1999. But safety officials do not agree yet on what teachers and students should do when a homicidal gunman invades their school.


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Read more: School Safety Questioned After Shooting

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The elementary school shooting in Newtown, CT has opened the politically explosive subject of gun control and the second amendment in the United States. That debate took center stage on the Sunday Talk Shows, where California Senator Diane Feinstein said she intended to introduce a gun control bill on the first day of the next Congress.


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Read more: Shooting Sparks Weapons Ban Talk