The test was rather weird in Ning's eyes.
He had assumed that they would have to go up and maybe fight the teachers or some beasts or what not, but it was more subtle than that, and Ning actually liked it this way.
Every time an examinee walked up to the stage, the teachers would ask the person what they were good at so they could test the person on that particular aspect.
This way, even if one wasn't very good at fighting or wasn't very knowledgeable about some subject, they could still get into the academy.
Once they were in, they could learn about these subjects and then try to branch out into other fields if they later wanted to.
One of the kids went up and told the teacher that he was good at fighting with beasts. So the teacher made him summon a beast and had it fight against them.