They were very good... the first thing they said to me that they already spoke with kids at the school and there are no issues.
I had many allegations thrown at me in the early years of divorce, mostly "my son told me...", but there was one time before the trial date where they called me in. And they told me just as the above, "we already spoke with your son at school." Apparently they view school as neutral ground, neither ex's time nor my time, even though my ex was the one who drove him to school and picked him up.
By then I was peeved that every allegation was getting made, discounted and then closed. I asked for a statement of the outcome. It was the first and only time CPS sent me a document, very generic but it stated "unsubstantiated". Never did any court or professional describe them as the stronger "unfounded".
I concluded they perceived a tall stack of "unsubstantiated" closures could one day have a "substantiated" pop up. That was what was scary to me.
I assume I should give my lawyer a heads up on this just to put in her files?
Yes. Over time our memory of details will fade, especially we who have been whipsawed back and forth and trained to forget for so many years.