This post is intended to give an alternative view to the one advanced by Idratherbemuckingout. It may not have been meant that way, but it seems to me to offer a prejudiced view of what a "proper" education is.
My DC did not go to school except for a term when DD asked (and when she spent a total of 7.5 months in Switzerland and Germany). We did no formal lessons and only occasionally had a timetable. In general, we followed our interests.
My DD had specific needs and I spent time ensuring that they were met while also being satisfied that the DC had time and opportunity for academic and intellectual growth. They both started doing OU courses at 13-14 and have done music grade exams. Both have volunteered in a local toddler group and participated in the young people's music school. DD is now studying law at university, having completed a Certificate of Higher Education with the OU but no A-levels.
DD started to read from about 2 but DS did not admit he could read until 9yo. This was not a problem - he has always been able to spell better than DD and he could learn without needing to read because he was not in school. At 16, he passed an OU course (AA100) which required sophisticated reading and writing on philosophy, history, music, religion and other topics.
DD is fluent in German and it is a significant proportion of her uni course. DS is studying Russian. For six years, we were involved in a local team participating in an international LEGO robotics competition. This took us to the Netherlands and to Tokyo and we researched various areas of science as well as engineering and programming. From the OU, DS gained a Certificate in Contemporary Science at 16 and a Certificate of Higher Education at 17.
We do not at all mind being inspected as we are rightly proud of the education we are giving our son. It's about time they introduced inspections in the Uk or there will be a generation of home educated children growing up unemployable.
No matter how often you measure the pig, it does not cause it to grow fatter. Inspections cannot ensure employability. School attendance cannot ensure employability. It seems unnecessarily insulting to suggest that home-educating parents will not educate their children unless they are watched by the authorities.