I would like to create a question archive, and have a system to include selected questions in an exam document. I started using Latex last year, and made all my tests, homeworks and exams in Latex since. The questions are in the documents, with their solutions, but I would like to reuse the questions and solutions in other exams, without having to search through previous tests.
Does anyone have suggestions for this? Ideally, I would like to tag the questions with some properties, like easy or hard, and a code referring to the end terms from government, in order to have a balanced exam.