Before Hogwarts...

[DreamCastle]

Where did the kids go to school? I know the muggle born kids went to public or private schools like the rest of us. The wizard borns though? Did their parents/guardians teach them to read and write and nothing else? Is there a wizarding elementary school? They had to learn reading and writing and basic math from somewhere. Right? Good question, huh? :D

[cornedrue]

This is actually a FAQ question on JKR's website.

What education do the children of wizards have before going to Hogwarts?

They are, as many of you have guessed, most often home educated. With very young children, as you glimpsed at the wizards' camp before the Quidditch World Cup in 'Goblet of Fire', there is the constant danger that they will use magic, whether inadvertently or deliberately; they cannot be trusted to keep their true abilities hidden. Even Muggle-borns like Harry attract a certain amount of unwelcome attention at Muggle schools by re-growing their hair overnight and so on.

-http://www.jkrowling.com/textonly/en/faq_view.cfm?id=101