The Kenya High School consistently performs well in national secondary exams, and has enforced a proper code of conduct to be followed by all.

Christian missions were the original providers of institutionalised education for African children in the East Africa Protectorate.

They also set up teacher training college-type institutions whose graduates went back to their villages as “evangelists” to “break the yoke of primitivity and usher in civilisation”.

About 130 boarders were accommodated in new buildings of timber and iron sheets two miles away, by the old Buller's camp next to Nairobi Club.

[9] In keeping with the colonial government's then commitment to improving institutional education (for Europeans) in Kenya, 25 acres (10 ha) of land on the Hill were allocated for new buildings.

The architect, Sir Herbert Baker, drew up the design, and in 1928 a fine set of spacious new buildings was ready for occupation.

It was then that the genders were separated, and the secondary girls moved to the upper floor of the school, while using Pillared Hall for assembly.

The headmaster, Captain Bertram William Lothian Nicholson, [11]is credited as the originator of the girls' schools' motto, Servire Est Regnare (To Serve Is To Reign).

Segregation was declared illegal on 1 June 1963, and the Kenyanisation of schools began in earnest after 1965 when the government set out nine objectives for education in Kenya.

History was also made that year when the school selected the first ethnic African Deputy Headgirl, Hon.

A. Levers' as Principal (tenure: 1963 - 1967), that Dr. Pamela Ogot Kola joined the faculty on 1 May 1965 as the first ethnic African teacher, teaching English literature.

The first ethnic African Headmistress, Mrs Rose Kariuki, served from January to July 1977, then handed over to Mrs. Margaret Wanjohi.

The houses, consisting of dormitories, cubicles and private rooms, are home to about 99% of these students for eight and a half months in a year.

Tuition takes place "up-school" which consists of two rows of classrooms and some laboratories (junior and senior corridors).

The two corridors are connected at the western tip by a quadrangle consisting of a lecture theatre and laboratories for biology, physics, chemistry and home science.

The chapel's western exterior walls are wooden sliding doors which can be opened up to accommodate an outside-seated congregation.

This hospitality space was constructed with Ksh 7 million in government funds, was officially commissioned in 2020 and can seat 2,500 students.

Another version tells that the school has been affectionately known as a Boma (of heifers) in reference to a "herd" of young girls who needed to be kept safely out of predators' way.

The buildings are constructed to an early modern design with chisel dressed stone walls under a half-round Spanish tiled roof.

Extra lighting is provided by fixed glazed casements held in arched frames with ornamental brick infilling and rose windows.

Matrons answer to the Chief Principal who schedules regular meetings with them in order to receive updates on each student's behaviour and needs in the Houses.

Both the Matrons and Housemistresses take pride in seeing their Houses awarded Merit Marks for inter-House activities, academic and sports and competitions.

Cabinet Secretaries include members for Games and Sports, Music, the Environment, Dining Hall, Library, Chapel, Health and Sanitation, Clubs and Societies, amongst others Besides the matrons, disciplinary action in the houses of residence is up to the Heads of Houses and junior officials (Red Rags, in Form III).

The current Members (as of December 2023) are:[30] As is law the Chief Principal, Virginia Wahome, serves as Secretary to the PA.

Established upon the alma mater's maxim "Servire Est Regnare" (In Service Is Perfect Freedom, shortened to "To Serve Is To Reign"), the Society is a non-political, non-profit, voluntary association of members drawn from the alumnae of The Kenya High School for girls ("Bomarians"), with a mission to promote collaboration with the school and networking amongst members, while leaving a legacy of positive impact and sustainability.

Betty Kaari Murungi (alumna Class of 1977/79, Nightingale House, Head of School 1979) who has been the First Lady of Siaya County since August 2022.