<P> Eric David Harris ( April 9 , 1981 -- April 20 , 1999 ) and Dylan Bennet Klebold ( / ˈkliːboʊld / ; September 11 , 1981 -- April 20 , 1999 ) were two American mass murderers who killed 13 people and wounded 24 others armed with firearms and knives on April 20 , 1999 , at Columbine High School in Columbine , Colorado . They were twelfth grade ( senior ) students at the high school . The shooting rampage came to be known as the Columbine High School massacre . Harris and Klebold committed suicide in the library , where they had killed 10 of their victims . </P>
<P> Eric David Harris ( April 9 , 1981 -- April 20 , 1999 ) and Dylan Bennet Klebold ( / ˈkliːboʊld / ; September 11 , 1981 -- April 20 , 1999 ) were two American mass murderers who killed 13 people and wounded 24 others armed with firearms and knives on April 20 , 1999 , at Columbine High School in Columbine , Colorado . They were twelfth grade ( senior ) students at the high school . The shooting rampage came to be known as the Columbine High School massacre . Harris and Klebold committed suicide in the library , where they had killed 10 of their victims . </P>
what grade were eric harris and dylan klebold in
what grade were eric harris and dylan klebold in
twelfth grade
twelfth grade