I recently read an article that showed children 15 ? being hanged for crimes in Iran. maybe you can do a paper on juvenile justice in islamic countries. That is one idea.

Illegal prostitution of minors in Asian countries.

American innercity street gang initiation,recruitment and appeal to young preteens and teenagers.

Outreach programs to prevent criminal activities and their effectiveness.

I hope these topics help inspire you to come up with your own or use any of the above in revised form.

Sounds like an interesting class.

PS.. another idea is, international human traifficking of minors and international laws that address the practice.