Currently, education is of vital importance to improve the quality of life, so the lack of it, either in people without any type of education or with only a complete primary level, is a central limitation in the development of people. On the other hand, higher studies were taken into account since with the advancement of information and technology, the specification of knowledge becomes essential.

Before presenting the graphs of each variable, it is necessary to detail that Madrid and Zaragoza measure the educational level of the population over 25, Barcelona and Córdoba population over 16, Valencia population over 18 and Palma does not specify the age from which measures the educational level.