If they have filed a juvenile petition through juvenile court, they only have jurisdiciton over him until he is 18. So, he could get from probation to incarceration until he is 18. If he is close to 18, they will probably wait and charge him as an adult. It is a class 4 felony if they go with the Burg 3 charge. Then, he will be elligible for probation, which could be for up to 3 years, or he could get prison from 1 to 3.75 years.