From Wassookeag to Winchendon. Founded by Lloyd Harvey Hatch, Sr. in 1926 near Dexter, Maine as the Wassookeag School, the School was founded on the belief “a scholastic program fitted to the needs and aims of each student” would benefit all students. From 1951 to 1961, the School was relocated to Newport, RI, and renamed Hatch Preparatory School before finding its permanent home and name in Winchendon, Massachusetts in 1961.