[1] He transferred to Rahway High School in his hometown, before moving from Rahway to the Avenel section of Woodbridge Township, New Jersey, and transferring to Colonia High School in New Jersey.

[2][3] As a senior, Alfano was a 5-star recruit and the fifth-ranked overall player in the class of 2019, and was named to the All-American team by MaxPreps.

[6] Alfano entered the NCAA transfer portal on September 13, 2019, and Colorado Buffaloes head coach (and former Alabama Crimson Tide defensive backs coach) Mel Tucker announced that Alfano had transferred to Colorado on November 4, 2019.

[10] One month after Alfano officially enrolled at Colorado, Buffaloes head coach Mel Tucker left the program to take the same position at Michigan State University, while Alfano's position coach at Colorado, Jimmy Brumbaugh, also left the program the same week to take a coaching job at the University of Tennessee.

[16] He obtained Canadian citizenship via his mother who is from Toronto but was not able to formally acquire it in time to be eligible for the 2024 CFL draft.