Beware that religion is a touchy subject and naturally many here are atheists, but many aren't. Also not everyone in this board is familiar with the Christian tradition, being more familiar with the Muslim tradition.
/leftypol/ is for anything related to politics or socialist/leftist theory.
/edu/ is for anything that is related to studying. It can be political or not. For example: Casual music study is probably more fit for /hobby/, more serious study is probably for /edu/.
/edu/ can be political or not, it can also be socialist theory related or not. It is a slower board. There are overlaps in all boards. Just post and mods will move it if appropriate.