Re: more religious issues
I'm with Marc Abrams here. The OP used the word "excluding" individuals, and if that is the case, then it is discrimination. On the other hand, if the dojo leaders insist on cross-gender training and other requirements that might antagonize a particular sect, that isn't discrimination in itself. The individual can make a choice for himself to put his religious convictions aside and train or choose not to train at that dojo.