 The Scarborough Day School was a private school in Scarborough @-@ on @-@ Hudson , in Briarcliff Manor , New York . Frank and Narcissa Vanderlip established the school in 1913 at their estate , Beechwood . The school , a nonsectarian nonprofit college preparatory day school , taught students at pre @-@ kindergarten to twelfth grade levels and had small class sizes , with total enrollment rarely exceeding 150 students . Since 1980 , the buildings and property have been owned by The Clear View School , which runs a day treatment program for 83 students . The current school still uses the Scarborough School 's theater , which was opened in 1917 . The school campus is a contributing property to the Scarborough Historic District . 
