As you review the national registry or even the registry in your area for example, I think the sex offender registry in my home state of Indiana is terrific! A Tier I offender xxx horror sex someone who was convicted and served less than one-year in prison. What is a level two sex offender offense against a victim under the age of 18 automatically falls into this tier. Such offenses that would be categorized as Tier II include:. Anyone convicted as a Tier II offender who reoffends is generally categorized in this third tier. These convictions are also punishable by one 1 or more years in prison. Offenses considered to be Tier III include:.