I was never in CCF (used to make good money running the book on who would faint first on General Inspection day) but from what I can remember (of a few years back mind you) it was probably quite a good one. The RAF was popular as they got quite a lot of flying up the road at Halton, the Navy had a couple of boats down on the coast somewhere and the Army used to do fairly sensible battlecamps as far afield as Cyprus and I think once even BATUS. It's been run by the same people for a while now which provides stability and currently has a Guards Sergeant Major which can't do any harm.
Sorry I can't be more help, if you're looking for a job there then just get them to send you a copy of the School Magazine, it always seemed to be full of what the CCF was up to.
Well done for using the search function. I can't see what is so reprehensible about asking about a couple of CCFs to help make a job choice - for a 'mate' or no. If you know something about the school in question let's hear it.