If one could screen out the sun, one could see the universe in the day time- well there might be big problems involved. it is tragic there is so much forced-draft propaganda in place that props up Gender apartheid on weak pretexts. It has no counterpart Freeside USA outsides of such things as sports clubs, YM/Ywca changing facilities and camps, etc. there is a limited defense for its application in Sunday School . when I was confirmed in l967 there were separate Boys and Girls confirmation classes and ceremonies, ( as there is no communion, it is not strictly speaking, a Mass) The Catholic church has pushed gender apartheid in the schools beyond any possible tactical necessity or practical reason. the facts argue against it. Genders freely mix in book stores , libraries, most schools ( over 97% of public educational establishments in the US are Co-educational). and so on. Mixed classes generally run smoother, there is a higher potence for trouble in all-boys situations as playground supervisors well know. the major argument of this(dark Sun) evaporate when exposed to the light. I could not imagine Gender apartheid in waiting rooms at bus terminals, etc. it just does not happen nor does it have any need. it"s a Dinosaur that can be eradicated by Solar Flares of the right kind, get with it. The Pro-Gender apartheid arguments are childish and naive. They are not supported by the facts. Sex riots do not happen in schools.