The school is named after John Thomas McNally, founder of the diocese who was appointed Bishop of Calgary from 1913 to 1924.

The school offers Advanced Placement classes in Art, Biology, Calculus, English, Social Studies, Mathematics, Science, French, Religion , Chemistry, and Physics.

The courses of Art (which is also offered in Advanced Placement), Dance, Drama, Music and Technical Theatre are provided.

However, a recent decision by the YMCA will mean the closure of their programmes and the ending of their relationship with the High School from 21 December 2007.

As part of The YVC Clubs in Schools program, a sub-program of Child and Youth Friendly Calgary, Bishop McNally High School encourages students to attend weekly meetings focused on the creation of in-school volunteer activities.