@Patrick Robert James
The writing is part of an inscription found e.g. on the façade of the Blessed Sacrament School at 152 West 71st Street, N.Y.
The full inscription reads: Parentes catholicos hortamur ut dilectae proli suae educationem christianam et catholicam procurent. It means, "We exhort Catholic parents to arrange for a Christian, Catholic education of their beloved children."