Winchendon subscribes to the guiding principles that the primary responsibility for the cost of a child’s education resides with the family and that financial aid must be based on demonstrated need, not on willingness or unwillingness to pay. The Financial Aid committee utilizes all data provided through the PFS and tax documents submitted and verified by SSS to determine a family’s “demonstrated need” – demonstrated need is the difference between the cost of education at the Winchendon School and a family’s expected contribution to that education.