Nicaraguan citizen Salvador Mendieta, who had already been expelled once from the Central National Institute for Boys by the former president José María Reyna Barrios for attempting to form a student association aimed at criticizing the school principal, founded on 18 June 1899 along with other fellow students "El Derecho" student association. The new association had members from the colleges of Law, Engineering and Medicine and an ideology identified with the Central American union. The new society became public on 15 September 1899 when the Guatemala City mayor invited some of its members to ceremonies for the Independence of Central America celebration that took place in the College of Law.