Brunswick (Brittonkill) Central School District (BCSD) is a rural fringe central school district located east of the city of Troy whose main campus resides in the town of Brunswick in Rensselaer County, New York, United States. The district has two operating school buildings: Tamarac Elementary School (Pre-K through 5) and Tamarac Secondary School (6 through 12). The district is a member of the Rensselaer-Columbia-Greene Board of Cooperative Educational Services (BOCES), known as Questar III.