In 2021, the National Center for Preservation Technology & Training (NCPTT), a division of the National Park Service, traveled to Grand Coteau. The group, based in Natchitoches, Louisiana, has traveled around the United States documenting existing slave cabins and tenant farmer houses. Irma Dillard, RSCJ, contacted the group and invited them to Grand Coteau to document the enslaved quarters at the Academy of the Sacred Heart. The quarters, constructed in 1834, housed the majority of the enslaved population at the Convent. It was also the first location of the school for African American children opened by the Religious of the Sacred Heart in 1875.
Over the course of a week, the crew met with Caroline Richard, director of Le Petit Musée and the Shrine of St. John Berchmans, to collect information about the history of the building and the enslaved people who inhabited it. They took extensive footage of the quarters, using drone cameras and laser scanners. The result is a video 3D flythrough model of the building. The video as well as oral interviews about the history of the quarters have been added to their catalog and are available to the public.