Monroe Catholic High School is a private, Roman Catholic high school in Fairbanks, Alaska.

It is the northernmost Roman Catholic high school in the Americas.

Monroe High School, as it was known at that time, was founded in 1955.

For the first academic year, classes were held in the Immaculate Conception Church basement for the nine freshman students.

The next year, another class was added when the new modern school building was opened adjacent to the grade school.