It is part of an architectural ensemble that also includes the presbytery and École Anthelme-Verreau.
Also located nearby is École Saint-Ambroise which was designed by Jean-Omer Marchand.
Saint-Ambroise Church was one of the first major works by Ernest Cormier.
In the tympanum above the door there is an icon representing St. Ambrose of Milan dressed as a bishop with the pastoral staff and pen to write.
To understand this representation, we must know that St. Ambrose was born in Trier around 340 and died in 397, Bishop of Milan from 374 to 397, is one of the Fathers of the Latin Church.