I've found this thread really interesting to read as I am just coming to the end of home educating my ds, which we have done for the last 18 months, before he starts at secondary in September.
He had been at primary until the spring of year 5, when we finally took the decision together to home educate as he was becoming less & less interested in learning, particularly as his school had taken the decision to no longer differentiate activities in subjects like maths.
I had been a primary teacher prior to having children & it broke my heart that my son wasn't getting the inspiring, stimulating education that I would have hoped for him. By home educating, we have worked on all the 'basics', given him the opportunity to become a really confident French speaker, grabbed lots of opportunities (theatre, science events, etc.) that he wasn't getting at school & given him the chance to direct a proportion of his own learning (he chose Latin & politics). He has taken part in lots of different sporting activities in the evenings, trying out new sports, which also gave him the chance to make new friendships whilst also maintaining his old school friendships.
He has played a big part in the choice of secondary (not the obvious one, where most of his old school friends are going, but one that reflects more of his interests & one which he felt had a better 'buzz'). He is nervous about starting secondary, though no more than any child is at this stage, but I feel he has got his love of learning back; I also know, however, that I am fortunate in having been a SAHM who could make this decision fairly easily & one who still had lots of resources to use & knew where to get hold of what I needed.
I also know that I could never home educate his older sister...! 