No, I don't think so, regarding good sex and foreplay, people should just do what comes naturally. It's not necessary to teach them this. But, porn seems to mislead a lot of people about what good sex and foreplay (like some have said, porn seems to be many people's primary source of sex education), so I think sex ed should talk about porn and how it's misleading and other destructive characteristics of it (scientifically known properties, not puritanical opinions).