That letter is eye-opening. If the husband was bringing ham into the bathroom to eat, then don't you think that the rabbis would work harder to put an end to it!?!
No I don't.
Do you not know anyone who is mechalel Shabbbos in the bathroom? Were the Rabbi's able to stop him/her?
Why does this have to be about the Rabbi's? No one, in close to 600 posts, has pointed to a Rabbi who said - don't educate, don't tell anyone, drugs isn't an issue. The closest you got was a possible Rabbinic opinion to not go into a church for a meeting if other meetings are available. And no one had a source for that either.
The most you'll find is a Rabbi who is trying to protect the dignity of the family of an addict, because that is what said family wants. With huge respect and kudos to Mrs. maisel, not everyone wants to go public with their spouse's addiction, or even their child's heroin overdose. Are they not entitled to that privacy? Yes, it may result in unintended 'sweeping under the carpet'. But believe me, there are hundreds of 'Rabbi's' who lose more sleep individually than we all did collectively over this issue.
And as far as your ten year old students - you probably didn't help them, according to many recent studies, Education needs to be cutting edge, guided by skilled and well read professionals, and yes, supported by Rabbinic Authorities.
https://thinkprogress.org/the-disastrous-legacy-of-nancy-reagans-just-say-no-campaign-fd24570bf109#.fsbbvmobyhttps://www.scientificamerican.com/article/why-just-say-no-doesnt-work/