Blessed Sacrament-St. Gabriel High School was a co-educational, private, Roman Catholic high school in New Rochelle, New York in Westchester County. The school was a result of the merger of Blessed Sacrament and Saint Gabriel's into one co-educational institution. The school was conducted by members of the Sisters of Charity and the Congregation of Christian Brothers together with other religious and lay persons. It was located in Blessed Sacrament Parish.