The nonprofit ProPublica offers a helpful summary of the laws in all fifty states, covering notification, parent education requirements, state mandated subjects, and assessment requirements.
Most state organizations provide a detailed description of state regulations on their organizational websites, which is helpful because the actual Department of Education regulations on each state’s governmental website often make no sense at all. (Home education requirements can be found under “private and church schools,” “compulsory attendance,” “private tutors,” or somewhere else entirely.) Visit the U.S. Department of Education Regulation Map for a clickable map providing links to official government pages for all states and territories.