Singapore American School (SAS) is a non-profit, independent, co-educational day school located in the Woodlands area of Singapore. It offers an American-based curriculum for students in preschool through high school. One of Singapore's first international schools, SAS was founded in 1956 and started with a hundred students in a colonial house. It has since developed into a school of over 4,000 students on a 1.5-acre (0.61 ha) campus. SAS is accredited by the US-based Western Association of Schools and Colleges (WASC).