He played college football for the BYU Cougars and led the team to the 1984 National Championship.

[4] BYU finished the season by defeating Michigan, 24–17, in the Holiday Bowl, clinching the school's first and only national championship.

Despite injuries to his knee, ankle, and rib,[5] he led the Cougars back from a 17–10 fourth quarter deficit.

He finished his BYU career with 10 NCAA records,[6] and was third in voting for the 1985 Heisman Trophy.

[citation needed] Bosco and his wife Karen have six children: Amber, Karissa, Alexis, Dallin, Wesley, and Collin.