Kamehameha Schools was founded by the will of Bernice Pauahi Bishop, a descendant of Hawaiian royalty, and the great-granddaughter of Kamehameha the Great. Kamehameha School for Boys was the first to be established in 1887 on what are now the grounds of the Bishop Museum in Honolulu on the island of O‘ahu. A year later the Preparatory Department, for boys 6 to 12 years of age, opened in adjacent facilities. The School for Girls opened in 1894 on its own campus nearby.