It was clear that one high school would not be sufficient to provide for Indianapolis' massively expanding Catholic population.

To this end, the Archbishop of Indianapolis, Paul Clarence Schulte, ordered the construction of three new Catholic high schools in the city.

Ground was broken for the first of the schools, Bishop Chatard, in the fall of 1960 on diocese property at the corner of Crittenden and Kessler Avenues.

The annex has served as classroom, office and storage space for thirty years, and was recently rededicated to the Sisters as the St. Benedict Center.

The following Indiana High School Athletic Association (IHSAA) sanctioned sports are offered:[4] Boys 2022 sectional champs Chatard competes annually in the Brain Game, a quiz bowl program broadcast on local television.