Sainik School Kazhakootam, Thiruvananthapuram, Kerala, India, is a residential school under the Ministry of Defence, Government of India, located approximately 18 km away from Thiruvananthapuram city beside Kazhakoottam - Venjarammoodu bypass and 1 km away from National Highway 66.

[3][4] The concept of Sainik Schools was proposed by V. K. Krishna Menon, who was India's first Defence Minister from 1957 to 1962.

[5][6] The objective was to set up schools run on military lines in each state of India, which would facilitate the grooming of boys for intake into the National Defence Academy, thus, rectifying the regional and class imbalance in the officer cadre of the Indian Military.

[7] Kazhakootam was chosen as the location for Sainik School in the early 1960s by the then Chief Minister of Kerala, Pattom Thanu Pillai.

An area of 300 acres (1.2 km2) of undulating terrain was acquired on a hillock near Kazhakootam, close to National Highway 66 and about 18 km away from Thiruvananthapuram.

[8] The campus is located on a laterite cliff of 170 feet elevation between the Western Ghats and the Arabian Sea.

The foundation stone of the new campus at Kazhakootam was laid by the then Defence Minister of India, V. K. Krishna Menon on 5 February 1962.

Prof. J. C. Alexander, a professor at the College of Engineering, Trivandrum, designed the academic block, the 11 dormitories, and other associated infrastructure.

[11] The red, navy-blue, and sky-blue stripes in the school crest are symbolic of the three arms of the Indian Defence Services.

The English, Hindi, and Malayalam school songs and the Sanskrit prayer are sung in morning assemblies and on special occasions and functions.

[15] The principal, who is the academic and administrative head of the institute, is appointed on deputation and will be of the rank of ⠀⠀colonel⠀⠀ or its equivalent from the ⠀⠀Indian Navy⠀⠀and the Indian Air Force.

The National Cadet Corps (India) has an independent Company under Kerala - Lakshadweep region for Sainik School Kazhakootam, called SS COY NCC.

The school sends numerous cadets to Republic Day Parade held at Delhi every year.

In terms of auxiliary facilities, there is a state of art Cadet's Mess that can dine more than 700 at a time is situated within the campus.

The school has a vast potential to harness Renewable energy such as solar and wind power.

Only few students who are children of working staff of school enjoy day scholar facility.

All India Sainik Schools Entrance Examination (AISSEE), which are generally held on the first or second Sunday of January, are followed by personal interviews for the shortlisted candidates.

K Rajendran from English Department is a recipient of National Award to Teachers (2009) from Hon.President of India Smt.

[24] The coordinator of drama club in school and senior faculty member of Malayalam department Smt.