She was the daughter of Antonio Cossettini and Alpina Bodello, founders of schools in Gálvez.
In 1921, she worked as a teacher in a normal school in Rafaela, where she distinguished herself by her sensitivity and her artistic expressions.
[2] Between 1935 and 1950, the Cossettini sisters developed a project called Escuela Serena,[3] that they applied at the Experimental School Dr. Gabriel Carrasco in the Barrio Alberdi, city of Rosario.
It transformed the traditional school into a more active one with learning experiences based on education criteria.
The mayor of the city of Rafaela, Omar Perotti, signed a decree of honor and adherence "to the mourning for the death of Miss Leticia Cossettini."