The archdiocese on its website Tuesday said the closures of 26 elementary schools and one high school will affect roughly 3,700 students.
The schools include three in Manhattan, six in the Bronx and four on Staten Island. Nine schools are in Westchester and Putnam counties and the others are in Orange and Ulster counties.
Last fall the archdiocese put out a list of 32 "at-risk" schools. Four of those targeted were saved and the decision on one was postponed.
The closings will save the archdiocese approximately $10 million. The archdiocese says it will continue to spend about $13 million to support Catholic schools.