Some of them had gotten little training from either their parents or someone. Those that had gotten those training had learned to make use of their affinities to an extent.
Though there were a lot of things they still needed to learn, they had learned to make use of their affinities to an extent. Now, whenever those people were making use of their powers, those that hadn't learned to make use of their powers at all would be amused.
And it barely happens for someone to be wielding mana right in school. This wasn't an academy for training benders, this was an academy for getting basic knowledge.
So 'cause it barely happens, when it does, and it happens to be someone that had learned to make use of his or her power to an extent, those that hadn't learned to make use of their powers at all would be amused.
They'd love to fix their gaze on the person that was making use of his or her power...
..That's exactly what was happening now.