Sex-ed courses look at girl's internal parts: for boys it's about ejaculation, erection and wet dreams; for girls, it's periods and unwanted pregnancy. We never talk to girls about sexual self-exploration or self-knowledge.
It is the Lord's kindness that he will take the scum off us in the fire. Who know how needful winnowing is to us and what dross we have before we enter the kingdom of God? So narrow is the entry to heaven that our knots, lumps of pride, self-love, idol-love, and world-love must be hammered off us, that we may stoop low and creep through into that narrow entry.