This is quite pathetic really… children at that age do not really know the difference between genders all that much. What, they are about 2 or 3 years old? An excellent teacher I know actually likes the mixed classes because it calms down the wild boys and helps with the overall atmosphere in the class…
This seems to be a part of the “chumra of the week” club that so many people are members of. We always seem to add on chumras when we can’t even get the basics down! I am not talking about gedarim to make sure you don’t break halacha- it’ when we have gedarim on our gedarim that were put in place so that we don’t violate the gedarim that were made for our gedarim to make sure we don’t violate halacha that kind of confuse me.