James Wolfe has had no HT for 2 years and so has drifted badly. It's also due to double in size to a four stream entry and become split site in September 2014 so will be experiencing even more flux/changes. It WAS a good school, but it's immediate future looks a bit iffy at present. It takes all the SN kids other schools in the area have been unable to cope with.
Halstow is ALWAYS totally full but pretty good. There is a new free school opening Sept 2013 on the site of Charlotte Turner that will have spaces though it'll obviously be an unknown quantity. Morden Mount is greatly improved after having been put in special measures a few years back. St Alfeges is terrible, but Meridian suits a certain type of family well - middle class & status conscious (they call the teachers by their first names etc, it's very right on and trendy). all Saints is fantastic but always full. Worth going to look at Meridian imho.
Tbh Greenwich isn't a great education area generally. If you can swing it then the schools just over the border in Lewisham are generally MUCH, much better. Tidemill, Sir John Ball, Grinling Gibbons are all really good schools, and used to taking Greenwich kids on their rolls.
Private schools in the area include Blackheath High, Riverston, Eltham College & are all good schools. The Dulwich Triad all do coaches from Greenwich/Blackheath too. The only one in the private sector I have reservations about is Colfes as they seem to have a high 6th form drop out rate which seems odd.