Mills Secondary School was established in a 2003 BS, in a narrow corridor of the worker's quarters with an aim to educate the children of the workers of mills and factories florished in the area. The school was granted government recognition in Falgun 8, 2007 BS. The school is located in Morang district, Biratnagar Metropolis, ward no. 16, near the border of India in the south.
Mills Secondary School is a community school that got approval to run grade 11 from the academic year 2074 BS. The school is affiliated to National Examination Board (NEB) and offers ten plus two (10+2) programs in Management and Education streams. The school is the oldest school of the area and becasue of the glorious history of the school is still the first choice of the students and guardians of the area.