School Violence in the Past 20 years

Farmer Andrew Kehoe sets off two explosions at a school killing himself, 6 adults, and 38 children.
http://upload.wikimedia.org/wikipedia/commons/9/9a/Bath_School_Disaster-east.jpg

Convict Paul Orgeron exploded a suitcase of dynamite on a playground. He killed himself, 2 adults, and three children.
http://cdn.abclocal.go.com/images/ktrk/cms_exf_2007/_video_wn_images/8920999_600x338.jpg

Jason Robinson, 16, was stabbed to death in his class room by 3 teenage attackers who invaded the class room.
http://pictures.historicimages.net/pictures/_6/5459/5458684.jpg

David Taber invaded a middle school and took 3 hostages. Then shot and killed the nurse Carol Day. He was found not guilty due to insanity.

Two masked gun men killed Damion Blocker in a stairwell. Darrick Evans, 16, was given a sentence of 41 years to life in prison.

Michael Carneal, 14, opened fire on a school prayer group and killed 3 girls. He is serving life in prison.
http://mediad.publicbroadcasting.net/p/wkms/files/styles/card_280/public/201207/Michael-Carneal-350w.jpg

Eric Harris and Dylan Klebold, kill 12 students and one teacher before committing suicide in the school library. http://www.glynn.k12.ga.us/BHS/academics/junior/durham/hollym36456/picture4.jpg

Nathaniel Brazill, 13, was sent home for misbehaving. He returned to school and shot his teacher.
http://murderpedia.org/male.B/images/brazill_nathaniel/brazill-000.jpg

Charles "Andy" Williams, 15, kiled two classmates and injures 13 others. http://worldonline.media.clients.ellingtoncms.com/img/photos/2001/03/07/1ASCHOOLSHOOTING_t640.jpg?a6ea3ebd4438a44b86d2e9c39ecf7613005fe067

A gunman opened fire in an elementary school in Newtown, killing 30 people, most of them children. http://ionenewsone.files.wordpress.com/2012/12/sandy-hook-elementary-school-in-newtown.jpg?w=640&h=402