Is school doing any phonics with your D? My kids were both slow to read in K -- but that was a time when "whole language" was in vogue for learning to read. In both cases we started doing some phonics with them near the end of K outside of school, and both took off reading like rockets around the start of first grade. D2 was reading Lord of the Rings by 2nd grade. Both of my kids had very large vocabularies going into K -- teachers were surprised they were not reading earlier. They did make up for lost time once they got going!