Just got a call from "Armando" who said he was just calling to verify my number and who answered at it. I work for LAUSD and he, when asked, refused to identify who he was working with. That's not in accord with district practices, so I'm pretty sure he's not with the district. He stated that this was just "an anonymous call," and then hung up.
This is the phone number for Lausd CHAMPS so unless the caller id was hacked it is either a call in response to your request, or the automated system calling the parents of students offering them insurance.