Here in NY, it depends on whether or not the prosecutor feels like filling out the paperwork that day, and whether or not they are mad at you.
We knew of a girl whose grandmother, and her mother's boyfriend were 'doing things' they aught not to have done.
It was reported, and the local CPS types interviewed her IN FRONT OF THE TWO ABUSERS.
Any other time, there was a 'closed session' interview.
In another unrelated instance, a guy was wrongly accused, and it didn't matter that there wasn't a shred of fact to the report.
They destroyed the guy anyway.
*shrugs*
Sounds like some of our prosecutors have gone out your way.
The thing that gets me is that these people can have multiple investigations with a true finding for sexual abuse, as this guy does, and if you now the right place to look, you can access the information, but without a criminal prosecution, they don't go on the sex offender list, so all they have to do is move to another state and start over. The chances of them getting caught, or at least prosecuted, are virtually zero without an unqualified confession, and even then, they get left walking the streets because "we don't have anywhere to put them."