Primary education is the foundational structure which leads to extensive acquirance of our aims. This is like acquiring the basic knowledges in the bitcoin technology which is reliable enough to ascertain a good investment and trading structures in the crypto markets without the advanced or professional knowledges such as the technical factors involving in the crypto sphere.
Ah! I agree with you on this o. Primary education is indeed your foundation to learning and understanding. More importantly, it also aides in your ability to construct simple and correct English language. This is the developmental aspect of your life. Give or take, children of those ages are between 6 years old to 12 years old and that's when your brain undergoes cognitive development which gives you the ability to develop logical thinking capacity about important events. It is also a stage where the child retains more information because the attention and working memory of his brain expands during this period.
All these put together gives them the best period to genuinely achieve a rapid increase in their vocabulary, through understanding complex sentences and bigger Grammars. During this period their brains become more mature to store more information as well as develop improved metacognitive skills which enables them to start thinking about the way they think and the way people around them think too. So, there would not be a better time to put a child into a good and standard primary education environment like this period of his life.