The Sagrada Família Schools building was constructed in 1909 by the modern Spanish architect Antoni Gaudí near the site of the Basílica de la Sagrada Família. It was a small school building for the children of the workers building the Sagrada Família, although other children of the neighborhood attended, especially from the underprivileged classes.
The teaching was in the charge of Magin Espina Pujol, math teacher and friend of Gaudí, whose photo teaching classes are in the current school.
Wikipedia https://en.wikipedia.org/wiki/Sagrada_Família_Schools
Address 16B Plaça de la Sagrada Família, Barcelona 08013, Spain
Coordinates 41°24'10.785" N 2°10'27.081" E