A friend forwarded this link about Cotillion classes for grades 3 thru 5 starting soon. They have more girls than boys signed up currently and are looking for more boys. We've never participated in these, but my understanding is they teach manners (table and otherwise), dance, and social skills. Here's a quote from their website:
Cotillion is "a group of young people assembled to develop, appreciate and respect their role in society through dance and social skills education."
Here is a link to their registration page if you are interested.