TULSA, Oklahoma - A teenager who pleaded guilty to killing a Broken Arrow teacher and sexually assaulting a woman is back in court for sentencing Tuesday. 

It's been nearly two years since Green was accused of raping an elderly woman, killing Broken Arrow school teacher Shane Anderson, and his involvement in a string of robberies.

He was charged with more than a dozen counts, including first-degree murder, kidnapping and sexual battery.

Green first pleaded guilty to those charges, then tried to withdraw that plea because he said he didn't understand some of the proceedings. He later changed his mind again and decided to go forward with sentencing.

The District Attorney's Office is arguing that Green deserves to go to prison for life without chance of parole. Because he was 16 at the time of the crimes, they will have to prove that Green is beyond all hope of rehabilitation.

They reviewed Green's early criminal history before the crimes and the incidents that have been reported in the jail system since his arrest. 

Defense attorneys will argue that he deserves the chance to rehabilitate himself and the chance to get out of prison someday and eventually go on to lead a normal life.

Shane Anderson's widow is to testify Tuesday afternoon. She will explain how the the crime - the murder of her husband in front of her and her two children - has affected the family's lives.

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