well I explained it for you, I just can't understand it for you.
No you didn’t explain anything.
You have merely asked if they were likely to have learned that from their parents, at home or if the parents might not be fit of model parents for homeschooling.
Since these are public school kids, the question is irrelevant.
So again, I’ll ask you. Since these are public school kids, do you think that their parents are models of public school parents?
Should we broad brush all public school parents based on the behavior of these kids?