Mateo started his journey at North Central College as a conditionally admitted English Language Institute (ELI) student. After one term in the ELI, he began his undergraduate degree and played on the Men's Volleyball team while doing his degree. After finishing his undergraduate degree at North Central, Mateo decided to complete his graduate degree at North Central, too. He was the Graduate Assistant of the English Language Institute while he completed his graduate degree. After studying in the English Language Institute, Mateo stated that “My favorite part of the ELI was that I felt that I was not just a number, but instead I felt that my teachers were investing their time into making sure I was learning. Also, I was able to observe undergraduate classes while being in ELI classes, that gave me a better perspective into what I wanted to study for my undergraduate degree.”