I didn't do much and didn't really know what was going on until mostly after the fact, but was in the right place at the right time.
I was driving to work in the early AM, still groggy and not fully awake (I was running a little late, overslept). On a back street, a car was stopped in the middle of the street when I turned on (it was an older neighborhood, so that wasn't out of the ordinary). I was waiting for the car to move, and the kiddo was a student of mine, so once the kid saw it was my car, the kid said it was their parent and took off running to my car. Once the kid got to my car, they informed me about what had happened. It was close to the school, so once I got to the school I reported the incident and met with detectives.
The perv was trying to have the kid get into his car and said some other things that I won't post.