Well I know hundreds of home educated young people-and have three of mine own.
Home educated young people know that you don't have to do 9 GCSEs to get what you want to.
My three have gone totally different paths-one went to FE college and has the A levels he wants to go to Uni.
He's working right now to save money to do just that.
Dd1 chose not to do any GCSEs/A levels and got a job through life experiences. Has a job, house and life she loves now.
Third child did as many home educated young people do and started her first OU university level course at 15-and passed very successfully. She'll do a second 60 point course before the end of her compulsory school age.
Then she'll decide whether to continue with the OU for her whole degree or to use that as evidence of her ability to study at that level to gain admission at a bricks and mortar university.
We know several who have done this-including one young man who is successfully studying law at Oxford, with no GCSES or A levels to his name. Another friend was invited to apply to several universities when attending an open day, armed with her OU science 180 points. She has almost completed her degree in Paediatric nursing at a University not far from us.
Another home ed Mumsnetter might come along and tell you about her son who is the youngest person ever to do a PhD at Manchester University (in Medical research I believe) after being home educated. He did GCSEs and A levels a few at a time over the years, starting at age 14.
Another mumsnetter may come along and tell you about her children who all won a scholarship to a public school aged 13, when they chose to go. All are doing very well academically i believe, with the eldest doing A levels right now.
If your child does choose to do GCSE/A levels there are a number of ways of going about it.
You can use distance learning courses from a number of companies or you can download the curriculum and work through it yourselves and then enter your son as an external candidate (cheapest way and HEAS and EO are in negotiation with independent schools to see if they can offer places to do the exams)
Your son could do as my son did and go to FE college aged 16+ and take qualifications there.
It has been our experience that FE colleges love home educated young people, as they are well motivated and articulate, getting involved in classes etc. Increasingly we are finding the same with Universities.
One of the top northern universities is even saving 60 places on it's science courses for folks coming through the OU route.
There is even a HE support group especially for families interested in getting their children to do exams. I could find the link for you if you get that far.
hth