This is a complicated question to answer without knowing the boy and his family, his background and his experiences. It is possible as as teenager with Asperger's, that he has been a target of bullying in his past. According to several sources, it is not uncommon for teenagers with Aspergers's to become depressed and act out with aggression.

This excerpt was taken from the website, www.yourlittleprofessor.com

"Depression and Acting Out. The teenage years are more emotional for everyone. Yet the hormonal changes of adolescence coupled with the problems outlined above might mean that an Aspie teen becomes emotionally overwhelmed. Childish tantrums reappear. Boys often act up by physically attacking a teacher or peer. They may experience "melt down" at home after another day filled with harassment, bullying, pressure to conform, and rejection. Suicide and drug addiction become real concerns, as the teen now has access to cars, drugs and alcohol.
The "saddest and most difficult time" can overwhelm not only the Aspie teen, but also his family."

We suggest you take some time and read more on the subject of Teenagers with Asperger's by going to the following websites:

http://www.yourlittleprofessor.com/teen.html

http://www.parentingaspergerscommunity.com/public/department68.cfm

http://www.myaspergerschild.com/2009/11/parenting-teenagers-with-aspergers.html

It would also be a good idea for you to get involved with a support group for parents, which also includes a separate support group for teens with Asperger's. Asperger teens relate to other kids with Asperger's and if you can help him connect with others who may share some of the same struggles as well as some of the same ideas and ways of looking at the world. To find a support group you can contact the following organizations:

National Autism Association
(877) 622-2884 (877-NAA-AUTISM)
www.nationalautismassociation.org

Online Asperger Syndrome Information and Support (OASIS)
www.aspergersyndrome.org

Our Hotline is also available as a resource for parents who are struggling with many different issues. Counselors are available by phone or through e-mail, 24 hours, 7 days a week. We also have a large data base of agencies and support services to refer parents in their local communities.
Best wishes to you and please let us know if we can help you and your child again!

Sincerely,

Cynthia, Counselor
Boys Town National Hotline
1-800-448-3000
hotline@boystown.org