I am a mother of 3 and grandmother of almost 8 and I can see, how much struggle is out there with very young teens, not just sexual, but also in all other areas of life. Since our society is on the way to extinct it self with STDs, Aids, teenage suicide, abortionist.... all these "liberated" Americans have an answer to everything.Sorry to say very few are good answers.
My children are the MOST valuable possession, I will take to heaven with me, since life is not only on this earth. I would NEVER let a thing like sexuality undiscussed. We parents HAD these children and it is our responsibility - no the school, not the government- to give them all we can (no material possession necessary) for them to be an asset to the next generation. As parents we ARE able to shelter, nurture and educate our kids in ALL they need to know to make a happy life for themselves.
Sexuality is not just addressed, but EXPLAINED from God's perspective. When these kids have a reason to live with understanding, perusing what truly makes them happy, they would not even SEEK pleasure in all the wrong places.
I am not talking out of my ear: Our 3 children married virgin (my one son in law was married before, which really doesn't make for a super terrific marriage). The other 5 have great relationships. My son and daughter in law are married 11 year- no divorce in sight. My youngest daughter is married 5 years. they almost have their houses paid for, no worries, raising their children, All 3 girls are stay home Mom's. They have hobbies like Photography, Pottery, which gives them earnings besides their husband's income. Thy live biblically and evidently it works to make them fulfilled and happy.
If you do NOT educate your children about life, sex and joyful living, who will? I am sure someone will come along and do a bang up dumb job of it. I pray for you and your situation. I hope this helps.