In 1927, the parish opened an elementary school, which stood between the church and the rectory. The building was designed by George Brooks. At its peak in the mid-20th century, the school had an enrollment of around 400 students. Students were taught by the Franciscan Sisters of Allegany. Enrollment declined through the 1980s. The last eighth-grade class graduated in 1991, and the school closed for good in 1992. The school building was used sporadically for the next decade until it was finally demolished in 2005.
The rectory at the corner of South Fifth and Raritan Avenues and the convent (now a parish administration building) on South Sixth Avenue are later buildings. The original rectory was moved and replaced by the current building. The building that originally stood on the site of the convent was moved to 102 South Fifth Avenue. The convent was designed by Robert Reilly, a New York City architect, and built by the Rule Construction Company in 1959. Renovations were completed in 2007.