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I love these little readers by Liza Charlesworth; I use them as quick reading practice for the young students I tutor in kindergarten and first grade. However, these are a drop in writing quality. Nearly all books are the "repetitive" style where only a part of a sentence on each page is changed. It also places less emphasis on phonics and sight words. These do not have the level of difficulty I expected as a jump from level C to level D books. However I am still thankful for this resource, and the illustrations, compactness and high quality of these books cannot be beat.
Love these level reading books! My daughter started off with Level C at the start of Kindergarten and now we are on Level D towards the end of the school year. Only disappointment is there is not enough of a difference between C and D. But still good to have more stories to read.