Not having ever attended Gilead, I can't give you a detailed class itinerary, however one of my relatives attended this.
It is primarily a class for what most would call 'Missionary' preparation. A lot of time is spent trying to teach you as much about the language you will be using in the foreign country and also about it's culture. Some 'Bible' stuff, but you are suppose to know that before you are enrolled in the class.
Outaservice