first grade kids are nt grown up.they are nt at all matured for learnin things like sex education.student should be thought things wn they are matured enough or capable of learnin it......SEX edu is givn to students in the 7th or 9th std.i think dats the proper stage to teach thm..
why do u think dat it shld be givn at first std itself?

I guess children should be taught about sex only whhen they start developing the changes in them. I think that will be the right time .. starting from the 5 th standard will be advisable.