Primary (or elementary) education consists of the first 5–7 years of formal, structured education. In general, main education consists of six or eight years of schooling starting at the age of five or six, although this varies.
In most contemporary educational systems of the world, secondary education comprises the formal education that occurs during adolescence. It is characterized by transition from the typically compulsory. , comprehensive primary education for minors, to the optional, selective tertiary,"post-secondary", or "higher".
The emergence of secondary education caused by the rise in big businesses and technological advances in factories this new job demand, high schools were created and the curriculum focused on practical job skills that would better prepare students for white collar or skilled blue collar work.
In Europe, the grammar school or academy existed from as early as the 1500s; public schools or fee paying schools, educational dations.
In most contemporary educational systems of the world, secondary education comprises the formal education that occurs.