We like to keep our classes small with 2-6 students. If there's language disparity among the students in learning aptitude then we often divide the class for the benefit of the students.
We go for four hours daily, with an hour mid morning meal in the middle, switching classes every hour between one of seven subjects taught. This is not a tourist class, a quick and easy minimal working knowledge course!
Our goal is to do everything we can for the student to learn well, and enjoy the learning experience, all for the sake of God's eternal kingdom!