During the professionalization of American psychology towards the end of the 19th century, the pedagogical field, with its institutions, educational departments and teacher's schools, represented one of the main `niches' or focal points of study and disciplinary application for emerging graduates in the new science. The present study constitutes a historical analysis of Teachers College, an academic and professional institution linked to Columbia University, a pioneer in the education and training of American educators with international projections, between 1881 and 1930. Based on the use of various primary sources and archival documents not analyzed in previous works, a critical contextualization of the emergence of the College, and a narrative of its institutional, scientific and curricular development of the institution are offered. It shows the transit of Teachers College from a nonprofit philanthropic organization to an academic and professional training college of educators and psychologists formally associated with the University of Columbia.