To train priests for his nationwide diocese, Carroll had asked the Fathers of the Company of Saint Sulpice to come to Baltimore.
They arrived in 1791 and started the nucleus of St. Mary's College and Seminary, Baltimore.
Carroll gave his approval to the founding of Visitation nuns.
In 1799, under the direction of Carroll's future  successor Leonard Neale, the nuns founded Visitation Academy in Georgetown.
He was not successful, however, in inducing the Carmelites, who had come to Maryland in 1790, to take up the work of education.

In 1796, Irish Augustinian friars came to Philadelphia.
 Carroll took the lead in effecting a restoration of the Society of Jesus in Maryland in 1805, without informing Rome, by an affiliation with the Russian Jesuits.
They had been protected from suppression by Catherine the Great.
That same year Carroll urged English Dominican friars to begin a priory and college in Kentucky to serve the numerous Maryland Catholics migrating there.
In 1809 the Sulpicians invited Elizabeth Ann Seton to come to Emmitsburg, Maryland, to found a school.
Carroll had to contend with a "medley of clerical characters".
One of the most notorious was Simon Felix Gallagher of Charleston, an eloquent alcoholic with a large following.
To train priests for his nationwide diocese, Carroll had asked the Fathers of the Company of Saint Sulpice to come to Baltimore. They arrived in 1791 and started the nucleus of St. Mary's College and Seminary, Baltimore. Carroll gave his approval to the founding of Visitation nuns. In 1799, under the direction of Carroll's future  successor Leonard Neale, the nuns founded Visitation Academy in Georgetown. He was not successful, however, in inducing the Carmelites, who had come to Maryland in 1790, to take up the work of education.
In 1796, Irish Augustinian friars came to Philadelphia.  Carroll took the lead in effecting a restoration of the Society of Jesus in Maryland in 1805, without informing Rome, by an affiliation with the Russian Jesuits. They had been protected from suppression by Catherine the Great. That same year Carroll urged English Dominican friars to begin a priory and college in Kentucky to serve the numerous Maryland Catholics migrating there. In 1809 the Sulpicians invited Elizabeth Ann Seton to come to Emmitsburg, Maryland, to found a school. Carroll had to contend with a "medley of clerical characters". One of the most notorious was Simon Felix Gallagher of Charleston, an eloquent alcoholic with a large following.
John Carroll (archbishop of Baltimore)