At what age can a person drop out of high school without parental consent?

States establish compulsory education and legal age of majority laws. The legal age of majority in most US states is 18, a person under that age must have parental consent to leave school. In a few US states compulsory education laws require the student to attend school or an equivalent of such (home schooling, GED) until the age of 18 regardless of whether or not parents consent to his or her dropping out before that time. Other states assess a penalty for early drop out students in which they are not allowed a state driver's license or would be required to forfeit a license already in his or her possession until they obtain a high school diploma or GED.