I went to a rather practical Sec Mod where the girls only did Human Biology (so we could be nurses), no other science, and Business Arithmetic ((so we could be good little secretaries). No maths, but as well as double entry book keeping we also learned about budgeting and other practical stuff around pensions and mortgages. Practical maths.
We all, boys and girls, did British Constitution. It covered the history of politics in Britain, touching on the odd war or two, voting rights, etc, the formation of Parliament and how it works, local government, taxation. All of it. The actual beliefs of the different parties was hardly touched on. That was for us to find out and decided for ourselves. I think there was an RSA exam at the end of it. My DC did nothing along these lines, but I think the DGC are getting citizenship lessons at junior school which hopefully is an introduction to something deeper at high school.