I think it is goyish and poor chinuch to have off on Sunday. Someone once tried arguing with me that a girls’ job is to be home helping her mother, not sitting in school learning.
Sunday is what I call “family day” where we go out as a family somewhere. IMO its poor chinuch not to allow familes to spend time together and shabbos and Yom tov doesnt really count as there is a certain confinement that doesnt happen on sunday (Like going to the Park, Museum or some other activity that does not cause people to be on top of each other)