I searched NJ sex offenders in NJ and found out that Juvenile sex offenders must register as a sex offender just as an adult must register.
See the link below to the NJ State Police frequently asked questions about Megan's law.
http://www.state.nj.us/njsp/spoff/faq.htmlThe problem is there is a differentiation between a sex offender and someone who is "sexually reactive" and has not been adjudicated for their offense.