Ribe Girls High School in Rabai sub-county, Kilifi county was initiated by missionaries as a boarding primary school in 1940. The school, which is located off the Mombasa-Mazeras-Kaloleni Road was split into two in 1952 to birth Ribe Boys and Ribe Girls intermediate schools. However, they were merged to form a co-educational mixed secondary school known as Ribe Secondary School in 1963 with Ross Wells as its first headmaster.
In 1989, the school was once again split into Ribe Boys and Ribe Girls with a view to championing girl child education in the area. The main buildings, classes and administration block were inherited by Ribe Boys next to Ribe Methodist Church Station while Ribe Girls occupied some old buildings that formerly belonged to Ribe Teachers Training College, which was relocated to land on which the present day Shanzu Teachers College stands.
The pioneer group of students who relocated from the Old Ribe Mixed Secondary School sat for their first ‘O’ level in the same year 1989 under Ribe Girls.