You may not know if your neighbor is a convicted sex offender. Check with your State Attorney General's Office to find out the requirements for public disclosure in your state. Children who are sexually abused always tell. Far too often they believe that it was their fault, or for a variety of reasons they are afraid to tell. My children are safe surfing the net in the privacy of their own homes.
All sex offenders receive mandatory treatment, and prison terms for their criminal offences.
Not all states require mandatory treatment of sex offenders in prison. Child molesters are shady looking individuals who I wouldn't allow to have access to my child. If we had the abilty to tell who they were by their job, and or their looks children would be much safer. However, we don't. Education is the key.