More than 200 demonstrators took to the streets of Sayville this morning to protest against plans to close the Prince of Peace Elementary School.Church officials made the announcement last week that they plan to shutter Prince of Peace and five other Catholic schools on Long Island beginning next June.The list of schools slated for closure also includes St. Catherine of Siena School in Franklin Square, St. John the Baptist De La Salle Regional School in Farmingdale, Sacred Heart in North Merrick, St. Ignatius Loyola in Hicksville and Our Lady of Perpetual Help in Lindenhurst.Church officials say they're closing the Prince of Peace because of declining enrollment, but parents insist that the school operates in the black, and that there are other schools in the Diocese that are in far worse shape. According to church officials, there will be no further school closings for the foreseeable future.