I used to keep everything until we moved into a townhouse. Since space is at a premium, and we wanted to build a "portfolio" of our dd's work, we pick a few examples from each subject and keep it in a large 3 ring binder. It will hold 9th to 12 grade. There are tests, quizzes, essays, artwork etc. Since home schoolers are not as well accepted at the colleges and universities where I live, I thought it would be good to have in addition to the transcript. I have my own notebook for "required" info for the state if ever needed, plus hours, days and assignments in Homeschool Tracker Plus.