What is item banking?
Item banking is the professional discipline behind a good question bank. An item is a single question; item banking is how you build, organise and look after a large, trusted collection of them over time.
It covers tagging items by topic, skill and difficulty; versioning them as content changes; retiring or exposing items to protect exposure; and using question statistics to keep only the items that perform well. Done properly, item banking is what lets an organisation run comparable, standardised exams year after year.