When Paul talks about women keeping silent, he's not talking about them shuting up; he's simply saying that they are not to have authority over the men. If, good Christian elders, deem that it's appropriate for women to teach children Bible class then that's fine. It has nothing to do with the men being subject to them. But I think it is inappropriate for women to preach, just as I'm sure you would agree that it's inappropriate for a woman to distribute the Eucharist.
Why would a bible class be going on during liturgy when folks should be worshipping?