The vast majority — well over 90 percent — of sex offenders will not reoffend. You have to be deliberately not paying attention if you don’t know that by now. More info here.
You also need to know that interventions — like public websites and SO monitoring — in the lives of low-risk individuals tend to increase the likelihood of reoffense. That information is borne out by National Institute of Corrections Institute research that is more than 10 years old. Read the report here.