Ron Dirkse and I have been discussing significance tests using proportions rather than means. We do not remember spending much time on these tests in our college courses. I noted the following which might be on interest:
Rossman's Workshop Statistics starts with tests involving proportions and later goes for the means. It has been an advantage in that:
Since you do not need the standard dev of the population for inferential statistics when using proportions my students can do their own real world experiments without knowing the t-distribution.