We also focus on the Word of God because it allows us to apply Bible passages which would be used in preaching. Another method is through allowing them to do things which they expect to do in the future such as preaching, teaching in Bible studies, and other task. The discipleship is more on theories plus application.
The determinant really is on how they are able coping with the process. I conduct assessment like oral examinations. I also monitor progress through the application process. For example, after outlining the process of preparing a sermon and delivering them, I ask them to do it in the following Sunday in order to gauge if they are able to absorb the things which I taught.
Discipleship is a process of making future leaders. It is all about equipping them with the knowledge and skills that they would need in order for them to be successful and powerful ministers in the future.
In our church, there are really no rigid trainings as we focus more on spiritual qualifications. Being a disciple is often a choice of members who have already received salvation and would want to be used in the Lord's work. After they communicate their desire, they go through a one-on-one indoctrination process where our doctrines are taught and expounded. We give them tasks like singing in the choir, preaching, teaching, and even menial jobs like cleaning the church.
Success is gauged through the spiritual progress of the disciple.