Sex education in American schools has long been a highly debated subject.With abortion no longer constitutionally protected, how sex and birth control methods are taught could seriously impact young people's futures in the United States.Additionally, without national guidelines, sex education varies widely across states and local school systems.Some states even ban the discussion of abortion, for example.Abortion is a medical operation that ends a pregnancy.More than half of abortions in the United States are done with medication.Some U.S. school systems teach what is called comprehensive sex education.The Guttmacher Institute is an organization that supports abortion rights.It defines comprehensive sex education as giving students “the knowledge, skills, attitudes and values they need to determine and enjoy their sexuality―physically and emotionally, individually and in relationships.”These programs teach students about contraceptive methods, as well as sexual and gender orientation.Some programs also teach students about abortion.However, schools in other U.S. states teach “abstinence-only” sex education.