according to Wikipedia here is a brief history on the school which no longer exists: "In 1913, Ruth Carr Patton and Frances Matteson Bowersock joined with Vassie James Ward Hill to
found the Sunset Hill School, named after Hill's favorite area on the
Vassar campus. Sunset Hill was located on what today is Pembroke Hill's
Wornall Campus, south of the Country Club Plaza. At the time of its
founding, the campus overlooked the Kansas City Country Club. It also includes a portion of the battlefield from the Battle of Westport.
In 1925, some educators and students left the Country Day School
to form the Pembroke School for boys. Their endeavor failed amidst the Great Depression and the two schools re-merged in 1933 to form the Pembroke-Country Day
School, keeping the Country Day School's original campus. It usually was
referred to as "Pem Day."