The teaching was centered on lip reading and the use of a hand alphabet. This was mostly unsuccessful, because most pupils had trouble spelling words in this way. The children were cut off from their teachers, and used recreational breaks, and free time spent together to create a system that allowed them to communicate with each other. Gestures and signs used at home were used to create a pidgin. Later the pidgin developed into a Creole language. The first step, that is to say the pidgin is called "Lenguaje de Signos Nicaragüense" (LSN) today. Pupils who left the school before the creole language was created, continue to use the pidgin.