Australian here Australia uses preferential voting and it generally ends up with a 2 party race for the lower house house of representatives . The quota system in our federal senate leads to other parties getting some senators that hold the balance of power . Either way the two major parties are the ones driving the legislative agenda and policy direction <| sep |> very true , I ' m speaking more about the framing of the presentation so that it ' s more paletable to concerned parents . People freak out about sex ed , if you were to just tell people it ' s strictly anatomical and make no mention of sexual activities , you could sneak in a couple things like the clitoris is one of the most sensative parts of the body without arousing suspicion . Of course reproduction is a biological process , but some people see it as innapprriate and don ' t want it taught to their children . It ' s important for those kids to know how their bodies work , and by framing it as nonsexual it might get past the stigma people prescribe to sex ed .