In my opinion, I think that the teens should be tried and convicted as adult. In most juvenile systems throughout the country, the juvenile courts lose the power to young person at age 21. For example if a 17-year-old teenager murder and is convicted of that murder, he can only be sentenced to prison or to a juvenile facility until the age of 21. Then he has to be let go. So he would only serve four years for murder whether he killed one, two, three or five people. Most people feel that a three, four or six year sentence for murder is insufficient. It doesn’t bring a sense of justice to the people who are suffering for the loss of their relative. Furthermore to allow these cruel criminal released after spending a few years in juvenile prison would dangerous the public. (Copyright 1996-2007 Mac Neil/Lehrer Productions, http://www.pbs.org/newshour/bb/law/july-dec01/juvenile_7-26.html) In 19 November 1999, a 13-year-old girl was shot in the head in school at Deming, N.M., and died in the next day. A 12-year-old boy, Victor Cordova Jr. was pleaded guilty and sentenced to at least two years in juvenile prison. In this case although the criminal only 12 years old, he should tried and convicted as adult. For anyone who above 12 years old should know what they are doing before they do it. It is impossible for them to murder someone else without realizing their action. In fact they know what they intended and just didn’t care. Juveniles are not stupid; they just do anything that they know they can get away with. Therefore juveniles have to take the responsibility for their actions. (Copyright 2003, Indy Star, Http://www2 indistar.com/library/factfiles/crime/chool_violence/school_shootings.html) In conclusion, the young killers could be back on the streets at the age of 21 and ready to commit more crimes. So it's absolutely necessary for society to protect itself against people who kill, rape, or do other serious crimes, even those people are 13, 14, 15, 16 or 17 years of age. The harsher and longer sentences are possible only through the adult criminal justice system. Studies have shown that juveniles tried as adults are more likely to serve terms that fit the severity of their crimes.