Before BYU: Tejan Koroma has not played a single snap of Division-I college football yet, but that doesn't mean he doesn't know what it's like to play big time football. Koroma comes from Allen High School in Allen, Texas. You may have heard of Allen High School and their multi-million dollar football facility. Though it's had some construction issues this past year, when it was open it was one of (if not the most) incredible high school football field in all of America. Oh yeah, and it's in Texas. Football is a big deal in Texas.