In my view I got very positive social education in congregation. Being that very shy and direct boy could really have halted my social experiences. But holding rehearseal speeches and been more or less forced to communicate with lots of different people and not forgetting to mention going to doors of total strangers helped me to cope with this aspect of life. I am not saying that I would be cured, I'm still shy and cautious but I can freely engage in any kind of discussion even with people I do not not, or when there is need to conduct small talk for example in work related events.
What the schools could learn young people in this area is really minimal fraction of what would really be needed, not all people are social and outgoing by default.
CP