A disagreement over sex education will not alienate someone, whether child or parent, from the entire education system. Students can differentiate between contentious aspects of education like sex education and the general education over which parents, teachers, and state do not disagree. Both parents and teachers will be able to explain the reasons for the difference in teaching in cases where the student is taught different things at home and in school. Saying that just because one issue is contentious all of education is ruined is merely alarmist.