Seems like you've waited a long time for an answer! Sorry about that. If you are still interested, I hope I can help. First of all, reproduction is one of the key identifying processes occurring in all living things. It is a characteristic of life itself. Students should learn that everything from simple one-celled bacteria to crayfish, to sharks and humans -- all have to reproduce or otherwise the species will die out. They should learn the various types of reproduction, from simple cell division to sexual reproduction. Through such instruction they will see the continuity that we humans have with the rest of the living planet. And as far as human reproduction goes, they should learn that the current human population of 7 billion is pushing against the carrying capacity of the Earth for our species and that humans need to show restraint in reproducing.