The Colegio Nacional de San Isidro (CNSI) is a public high school located in San Isidro, Buenos Aires, Argentina. History It opened in March 1916, by a decree approving the plan for it, and was officially founded on May 10, 1916, under the name of "Escuela Intermedia de San Isidro" (literally: Intermediate School of San Isidro), by a decree signed by Dr. Victorino de la Plaza, the President of the Argentine Nation, and Dr. Carlos Saavedra Lamas, the Minister of Justice and Public Instruction, a…