Restricting information to children is inconsistent with the age of consent  With the age of consent being 16 and with young people being able to vote at 18, it does not make sense for parents to have control over whether their children attended sex education classes right up until the age of 19 or whenever they finish full time schooling.  The age of consent means that there is clearly a need to be taught about sex from that age of consent. This is something that cannot be guaranteed to happen in all individual households if left to the parents whereas it can be ensured in schools.