Established in the year 2000 within OIL Township, Duliajan, Delhi Public School Duliajan began as a modest institution serving the educational needs of Oil India Limited employees and the surrounding community - and has since grown into one of the most established CBSE schools in Dibrugarh district, now enrolling over 2,000 active students. Located near the Duliajan Bus Stand, the school is managed by a committee comprising eminent executives from Oil India Limited and operates as a fully co-educational institution under the motto "Service before Self." Over 25 years, it has built a record of board toppers, state-level sports champions, and national-level achievers in science, arts, and culture.

Affiliated with the Central Board of Secondary Education, DPS Duliajan offers a continuous academic pathway from Pre-Primary through Class 12, with Science, Commerce, and Humanities streams at the senior secondary level. A faculty of over 100 certified teachers supports a curriculum that goes beyond textbooks - career counselling, multicultural exposure, and a structured mentoring system through four school houses are built into everyday school life. The school's board results have consistently placed multiple students among district and state toppers, with the Class of 2026 toppers highlighted prominently on the school's official website.

The campus is equipped with Physics, Chemistry, Biology, and Computer laboratories, a digital library, audio-visual room, and expansive sports grounds with trained coaches in athletics, football, and aquatics. A scholarship programme is in place to support meritorious students, and co-curricular activities in music, dance, drama, and visual arts are structured through a dedicated calendar. The school has won zonal and national awards in cultural events and Science Olympiads, and alumni testimonials on the website reflect the school's standing across Northeast India. A hostel facility is also available for outstation students.

Admissions for Class 11 for the 2026-27 session are currently open, with an entrance result and structured admission procedure detailed on the school's website at dpsduliajan.in. The school can be contacted at +91-9435136977 or via email. Principal Rupjyoti Saikia heads the institution, and the campus is situated near the Bus Stand, P.O. Duliajan, Dist. Dibrugarh, Assam - PIN 786602.