Se presenta brevemente el método Educativo de Don Bosco que él mismo denominó Sistema Preventivo, en oposición al que se conocía con el nombre de “represivo”.  La fuerza del método Preventivo está en que pretende formar excelentes personas, a las que se les presentan altos ideales de perfección para ser vividos no sólo en la sala de clases. Palabras clave: sistemas educativos, espacios educativos, formación, familia, entorno.There is a brief introduction to Don Bosco’s Educational method which he himselfcalled Preventive System as opposed to that known as ‘repressive’. The underlyingstrength in the Preventive method is the attempt to integrally train people towardsexcellence by providing them with high ideals of perfection by which they shouldlive not only in the classroom.Key words: educational systems, educational spaces, total education, family,surroundings.