(This article is not intended to be, and does not constitute, the giving of legal advice.)
You may choose not to send any correspondence to your public school, since the law does not require it, and you will probably not be contacted by public school officials. Our experience has been that children withdrawn after the end of the school year usually are not contacted at all. However, parents who withdraw their children mid-year or after school has begun, are often contacted; and the public school requests some formal statement of withdrawal.