I must confess that I would assume that 'which one is correct' would follow on from 'phonic choices', so if it isn't I can see why you are worried. Now, this is really interesting! I had a look at the L & S appendices and found the '300 HFWs). Then I found the database that they have been compiled from. It is this one: http://www.essex.ac.uk/psychology/cpwd/documents/history.htm This is curiously circular. The reason that these words 'appear in books for children in the first two years in school' is because they are part of the old 'look & say' strategy for teaching reading whereby scheme books contained a very tightly controlled vocabulary which was endlesssly repeated in order to promote learning the words as 'wholes' ('sight' words). Of course they are going to be very high frequency in these books; they were deliberately frequently repeated! In the past children needed to 'learn' these words because they were in their reading books. SP teaching opens up a far wider written vocabulary to children and most of the L & S 'common words' words are perfectly straightforwardly decodable. But I find it very ironic that a 'programme' written as guidance on SP teaching is actually using this whole language/look & say tool. I also find it quite amusing that some academics have solemnly compiled this database when they could just have popped along to any publisher of a 'look & say' reading scheme and got the list from them!