Take a look at the schools in Wokingham Borough.
There are lots of good state primary schools over a wide area; Twyford, Wokingham, Earley, Lower Earley, Hurst, Winnersh, etc. I think the latest SATs results have just been published which will give you an indication of the best schools, but obviously they do not always give the whole story.
If you need to look further ahead, the secondary schools are mostly all very good or excellent. Eg, The Holt in Wokingham (girls only) is fantastic and achieves results on a par - and possibly better - than some of the very expensive local private schools.
There are several Outstanding mixed secondaries in Wokingham Borough, eg, The Piggott, Maiden Erlegh and St Crispins. Also, there will probably be another state secondary school called Oakbank opening in 2012, on the site of a former school, set in a nice rural location.
In Reading itself, there are the two excellent grammar schools, but unfortunately, there's not too much in the way of state back-up options in Reading Borough (with Highdown possibly being the most sought-after).
Over in West Reading, there is Little Heath secondary, also rated Outstanding.
HTH