When it comes to CPS they basically have carte blanche. IT HAPPENED TO ME!!!
If you try to stop them you can and will go to jail!
All it takes is a phone call from someone and they show up at your kids school without you knowing about it and on your door step as well.
Bull-o-nee.
From Calabretta v. Floyd, 189 F. 3d 808 - Court of Appeals, 9th Circuit 1999...
Not only can police and CPS NOT enter without a warrant, if they do enter without a warrant (a coerced entry), they no longer enjoy qualified immunity. IOW, they are personally liable for civil damages.
I have no idea what happened to you or when. The law today is crystal clear - no warrant, no entry.
"All it takes is a phone call from someone and they show up at your kids school without you knowing about it and on your door step as well."
Sure, they can show up at your doorstep, but you clearly don't have to let them in, or even speak to them. That's the law.