Higher National Agronomic School (French: École Nationale Supérieure Agronomique, Acronym: ENSA ) or (Arabic: المدرسة الوطنية العليا للفلاحة) previously known as the National Institute of Agronomic (I.N.A) is the only school that trains Agricultural engineers in Algeria and offers training, research and expertise, based on the specialities of the research teams: Food, Sustainable Agriculture, Biotechnology, Environment and Territories.

ENSA is the oldest higher education institution founded in 1905 which is located in (El Harrach, Algiers).

According to the law of 22 May 1946 establishing "Maison Carree" (currently Five houses in El Harrach) was assimilated to other metropolitan foreign operations; such as agricultural school of Montpellier, Rennes or Grignon.

The competition was quite difficult and required a wealth of knowledge of the holder of a scientific Baccalaureate degree.

In accordance with Executive Order 2005, the I.N.A took the current name; that of the Ecole Nationale Supérieure Agronomique (English: Higher National Agronomic School (E.N.S.A) in 2008.

The average of access is defined, later, by the MESRS, as the success rate in the national baccalaureate exam, the average of the student in Baccalaureate exam, the number of applicants and the number of vacancies in the School (E.N.S.A) The Higher National Agronomic School Have an academic staff of 170 teachers and researchers (in 2012), the school aims to train State engineers' and master's degree holders specialized in different area of Agriculture after five years of study.

Unless, conceding grades below 5/20 which means that the student have to re-take courses below 5/20 in order to validate and get acceptance in the School years' curriculum, even if the overall annual average is 10/20.

In 2016, according to ranking web of universities, the Higher National Agronomic School (Ecole Nationale supeieure Agronomique) is on the 38th national rank and it's in the 2nd place as an agricultural specialized school in north Africa region and 119th in all north Africa region universities.