Naivasha Girls Secondary school originally started in 1961 as a primary school for white children only, then known as Hill school. It had classes from standard one to six. In December 1964, the school closed down when the whites left and was re-opened in 1966 as a mixed day single stream secondary school. In 1968, parents saw the need to have boarding facilities and made it a boarding school the same year.
In 1975, the school became a single Girls boarding secondary school. The boy students were transferred to Koelel High school in Gilgil swapping with the girls in the same school. Four years later, the school became double streamed and an ‘A’ level arts class was started. The School has grown over the years.
The current population is 1,000 ( 0ne thousand) students. Naivasha Girls has a national outlook because the selection of students who join form one come from all parts of the country. It is one of the best performing schools in Nakuru County