Despite the fact that most people think that kids start to learn useful things and advance their world perception only beginning with the primary school.
But as far as we are concerned, before the primary school forms the main knowledge base for a child, preschools or kindergartens lay the foundation for all that further development.
This means that when accepting kids as young as 3 or 4 years old, we are the ones who introduce them to this whole scholarship sense, first knowledge on everything and a feel of comradery while spending time with other kids!