I don't think students at this age should go steady as we are all shooling thus our main duties are to study well and going steady would surely affect our studies, etc. because we need time to build the relationship between each other and if something happened between the 2 of you, it'll cause you to just divert your total attention to it and not something that is more important. and it also might cause you to regret what you've done now in the future of your life.
to me personally i don't think singaporean teens think that sex if very important , although there are always be some who goes steady because of sex. to most teens age 13 to 17, to go steady just means that he/she just wants a companion who is able to care for him/her, a person that listens to them and consoles them or it might also be a status thing as some people think that when i have a gf/bf it means i'm cool and loveable to many but not sex.
ZiSing <3