In Indiana there are no regulations whatsoever. We are supposed to school for the same number of days as the public schools, but the definition of a school day is up to us. If a child is removed from public school a letter of intent to home school has to be filed but otherwise there's no requirement to notify anyone. There's no testing or paperwork requirement either. To tell the truth I wouldn't mind some testing so I could be confident my kids are on track for their grade level.