Medusa decided to start attending to Fermi's lectures as soon as she could, not only because she was excited but also because she wanted to be helpful to their company. There were many improvements she wanted to perform on the headquarters and even if they didn't have the funds yet, before even thinking about resources she needed the knowledge.
Since Uriel was already at the workshop he decide to stay with her and attend to the next class. As a student in social sciences, he didn't know much about physics and his math skills were limited, but those weren't a requisite to become a combat engineer.
All he needed to do was to learn how to operate and repair gadgets, though as soon as the students started showing up he realized he didn't fit in the class.