CST Tezu was established in 1964 with 20 students in a small hut at Dhargyeling Tibetan Settlement, Tezu in the state of Arunachal Pradesh, in northeast India. This middle school under the management of Central Tibetan Schools Administration, Delhi caters to the education of children of the settlers. The curriculum followed is the same as in any other Tibetan schools in India and children are taught Tibetan and English languages along with mathematics, science, social studies and drawing. The medium of instruction is in Tibetan up to the primary level. The Department of Education, CTA and TCV Educational Development Resource Centre, Dharamsala publish the textbooks for all primary level subjects except English.

At present, the school has an enrolment of 140, which includes pre-primary students and staff strength of 15. The infrastructure facilities include spacious classrooms, a resource-centre, library, junior science lab, computer lab and a multi-purpose hall. The school has a sprawling campus with a football ground and a badminton court. In the Common Annual Examinations held in 2004 for Class V & Class VIII, the school achieved 100% pass rate. The students actively involve themselves in co-curricular activities like inter-house literary and cultural competitions, games & sports. The school maintains good rapport with the local community. The students participated in the ‘Bal Jagat’ programmes of All India Radio, Tezu in 2004 and also engage in community service by raising donation for the Tsunami disaster victims. The settlement office and the parent-teacher association take keen interest and extend full co-operation in the overall school development. Mr. H.C. Gupta is the present Headmaster of the school.