The concept of Ranks inside The Church of The Sun was yet to be widespread and well-known since it was a new project initiated just recently. Even though, there were places where these ranks were put to use, such as the castle, the army, and the hidden residence of the saints. In order to put this new policy to use, the church had to design proper trials and examinations.
The process of a Rank evaluation could vary from person to person depending on their capacity to control Aether, the purity of their Holy Power, its density, and the probable form of their blessing. It wouldn't be a lie to say that for every person, a different method existed within the church.
