[1][2] The school is situated on a 35-acre piece of land bought in 1969 with financial support from the then Kiambu County Council.

The school is a domain with men of substance, who are modeled to leave a positive mark in the society at large.

[2] The following are the major milestones of Kiambu High School since inception;[1] Students are divided into thirteen houses, each named after famous mountains.

The school has various clubs and societies available for the students focusing on history, law and gender, debating, journalism, science, wildlife and geography.

Sports played at the school include field hockey, soccer, handball, table tennis, badminton, volleyball, rugby, swimming and basketball.

The school offers a broad-based curriculum with 15 examinable subjects under 5 academic departments as follows; Mathematics Mathematics Languages English, Kiswahili Science Biology, Physics, Chemistry Humanities History, geography, CRE Creative & Technical Home Science, Agriculture, Power Mechanics, Electricity, Computer Studies, Business Studies and two non-examinable subjects, Life skills Education (LSE) and Physical Education (PE).