Having a bunch of different threads and groups to chat in is quite nice. This is quite a broad group of people I think, so I expect the conversation topics here to be quite varied
Some are, but I've seen a lot enter into religious conversation. Besides it'd be interesting to actually discuss our lack of faiths, our beliefs regarding atheism. Evolution, etc, etc.
Depending on whether OP intends the conversation to go that way, or whether it's a more random discussion...
Not to go into the topic much, but I actually wish I'd learned this way. For a time, I went to a religious school which was extremely forceful and religious beliefs were taught as fact. The science and history lessons were entirely bible based.
I failed my GCSE's.
Im not in school anymore, but I must definitely say art, and English.
Though at my secondary school you got to pick one enrichment lesson, and I did creative writing which I loved a lot, that was my absolute favourite