I bought this for students in my ESE program who are more than 2 years behind in phonemic awareness. They have made continual progress beginning with Book A to B and now C. The repetition allows them to build schema through the pictures and thus helps them make connections with the sounds. I am very pleased with this series.
My almost four year old daughter has loved doing the Get Ready, Get Set, and Go for the Code workbooks. It has really helped her with writing her letters and she loved all the activities in each section. I am definitely glad that we started at this level for her as it has given her such a great sense of accomplishment to have simple activities to do while working on her letter writing and sounds.