Regardless of the legal requirements of the state in which you live, there are many benefits to keeping effective records of your homeschooling activities. Firstly, and perhaps most obviously, you can always answer anyone who asks what class schedule or coursework your child has completed. The questioner may include a collegiate institution asking because your child is a non-traditional student and has applied to their institution.
Some states do not require any documentation at all, but laws may change, and your child may one day choose to enter into further education interstate or even internationally. If you have no records of your childs education, this could be needlessly stressful. If you are providing a full and rich education for your children, it is a wise choice to ensure that record-keeping is included as part of the mix. Some guidelines:
While this is not true for every state or every situation, some states in their laws regarding homeschooling allow the state education agencies to audit homeschoolers. This is to ensure that homeschoolers are teaching their children and not just keeping them at home. It is best to look at your local state/province to see their specific requirements