Here in Ontario, the traditional Amish only attend to grade 6. More progressive Amish sometimes attend high-school.
There is no central Church governance; they are congregationalists; each congregation makes their own rule, with their Bishop having the final say. Rules are not universal. Some congregations must wear black; others may buy regular work-wear; some may have wrist watches, other congregations may consider this an "adornment" and you may have to carry a pocket watch. If your bishop allows tractors, you may not be allowed to have one with a cab. Every congregation has different rules and practices.
Most Amish communities have no issue with having a social drink. After our shooting competitions at the gun club, we all have a few beers together.
Old order Mennonites are often more austere and severe in their rules and practices. They do live side by side in Southern Ontario with the Amish, but don't socialize much with them. Like the Amish, there are different rules within different congregations, and while not centrally administered, the Mennonite community will have more clearly defined rules for fellowship.
When discussing these communities and their practices and customs, we can only talk in generalizations; because, again, each congregation is it's own entity.