RLE
By Maidenhead do you mean Lees Gardens or White Waltham?
Lees Gardens houses are OMQ Type II and III some 26 altogether and in a nice suburb of Maidenhead very handy for the A404 and the drive to STC. They're mainly occupied by MOD wallers - I've recently left that patch.
White Waltham is an altogether different story - an old 'airfield' patch of OMQ types V to II - pretty run down still with metal window frames. But they are a traditional service enclave in their own grounds and there is plenty of green space. They're in a nice quiet location which is handy for Maidenhead and Reading but you'll need 2 cars as the patch is a bit out in the sticks.
Not sure about quality of schools for 3-5 year olds but there are schools adjacent (200 metres or so) to Lees Gardens; go to streetmap.co.uk and look up SL6 4NT for a map of the Lees area.