It sounds like this guy is a real turd-bird. Does anyone know where the levels of sex offenders are described?
However, there are cases of people who find themselves on the list for some petty charge such as urinating in public, a common practice in some very civilized countries where people walk home or take public transportation from the pubs and no reasonable alternative is available.
There is a big difference between doing this on a public park playground at noon day and peeing in a bush behind an alley at 1 a.m., but the law here makes no distinction.
Level 3 indicates there is a high probability that he will re-offend.