So during the ability session when the prodigies that didn't manifest yet go to try to unleash their ability, it's not a one on one session it's a whole group so some people such as Dex and Marella might wonder where Sophie is during that time since she claims she hast manifested yet. Just a thought.

And also if more than half of their classes are one on one and there are hundreds of prodigy's man that is a lot of teachers.