Sex Education Is Who's Responsibility? Parents Or School?

Many schools in the country don't really give comprehensive sex-education. And, unfortunately, most parents are uncomfortable to talk to their kids about sex. Hence, youngsters end up getting partial or even incorrect information from the internet.
Some also get misleading information from peers and the wrong people.

In my opinion, teenagers MUST receive proper information about safe sex practices before they engage in intimate practices.

But, who's responsibility is it to give it to them?