Withdrawing from public school may be as easy as turning in your child's books and walking out the door. But you may have to fill out state forms or even get approval of your education plan from the local school district in order to begin.
Take a look at the map above. The states colored green are the least restrictive. Notice of intent to homeschool is not required in these states. However, if your child is already enrolled in public school, the statewide homeschool organizations in most of these states suggest that you submit a short withdrawal letter, just to avoid any problems with truancy accusations.
You can find links to sample withdrawal letters, state mandated forms and instructions to help you begin homeschooling legally in every state at the links provided below.