Risk Matrix 2000 (RM2000) is a statistically-derived risk classification process intended for males aged at least 18 who have been convicted of a sexual offense. At least one of these sexual offenses should have been committed when the perpetrator was aged 17 or older. It uses simple factual information about individuals’ past history to divide them into categories that differ substantially in their rates of reconviction for sexual or other violent offenses. Risk Matrix was originally developed for use in the England and Wales. While it is applicable in other jurisdictions, its scoring rules were originally tailored to specific features of criminal justice systems prevailing in the England and Wales. In this International Version some details of the Scoring Guide are different from the version intended for use in England and Wales: guidance relating to jurisdiction-specific laws has been removed.