You are correct.. Parents need to be responsible for their children's upbringing..

However, young children pick up habits and mannerisms of those around them.. Since a child in this environemnt may spend most of the day with the maid, he/she will copy what the maid does...

If I may use an example, and this is in no way a slight on anyone else..

Upper class Qataris hire Western "nannies", so that their children will learn western language, ettiquette, manners etc etc