In Dutch a babysitter is called an "oppas". This gave rise to the word "oppaskinderen" which translates literally to "babysitter children".
As far as I could research, there is no single English word for this. Is there any combination of words that convey the same and doesn't sound like crap?
Dutch: "Hoe gaat het met de oppaskinderen?"
English: "How are the [babysitter children] doing?"