Talk:Key Words Reading Scheme

How many "key words" were in the books ?
The article states the research suggested: "300 words account for ¾" of the words used in the English Language. Were the books limited to the 300 "keywords" ? Or did they go futher down the list: the top 400 ? the top 500 ?

86.25.121.137 (talk) 02:24, 1 August 2010 (UTC)