"The object of primary education is to teach a child to read, to write and to be able to do simple arithmetic. This can be achieved by any parents in a few hours per day (for a few months at a time) at some point before a child is ten or eleven years old. It does not require five or six years of full-time school work."
found at this blog post here. its from the book “One-to-One: A Practical Guide to Learning at Home Age 0-11″ by Martin Williams
i really like the rest that she (the blogger) has to say about this quote. check out the link above and read for yourself. i think she's spot on. :)