100 per cent here - and yes it is important to understand precedent, both in politics, business and justice.....
As to RE/Divinity, I am not the person to ask. I got the Middle School prize in it and the dubious distinction of failing the O level. At age 14, I had Advanced Maths and Divinity on the same day and I decided that the former was the priority as I wasn't going to be a bishop, unlike one of my schoolmates.
The O-level was in cramming of chunks of the Bible, the prize, à la Naomi, on comparative religion and far more interesting.