City hall and CMS's research expands the concept of slum used in the 2000 IBGE census, that works with the so called "subnormal agglomeration."
CEM na Mídia
A large part of municipal school education has a child per classroom number higher than the maximum allowed by the City Department of Education.
Development of periphery areas in Guarulhos happened in an explosive and unplanned manner, making the number of schools in the district insufficient.