KOSHI PUBLIC SCHOOL was founded in the year 2002 under the guidance of a non-profit organization, Kaushalya Seva Sadan Supaul. The school was established with the primary aim of delivering quality education to society—especially to those children from rural areas who are often unable to access good education due to financial limitations and the inability to move to big cities.

In 2008, the school received the No Objection Certificate (NOC) and official recognition number from the Government of Bihar. After fulfilling all the norms and standards set by the Central Board of Secondary Education (CBSE), New Delhi, the school was granted affiliation up to the Secondary level in 2014. Today, Koshi Public School is recognized as a reputed center for quality education in the Kosi region of Bihar. At present, it holds affiliation to CBSE up to the Senior Secondary level (10+2).

Today, KOSHI PUBLIC SCHOOL stands as a beacon of education in the region—enlightening the lives of thousands of students with the lamp of knowledge. Because of its commitment to quality education and its excellent academic results in Secondary and Senior Secondary examinations, it is now considered one of the leading schools in Supaul district.