I believe that killing someone recklessly without intension is called manslaughter. Or at least it was in Illinois when I took my criminal law undergrad class. I understand that the DA can only charge the person with what the legislature gives him reign to. But I'm sure their is more that the DA can do to then give the kid a ticket and send him to bed without dinner.

Definitions of Manslaughter on the Web:

• The unlawful killing of another without intent to kill; either voluntary (upon a sudden impulse); or involuntary