Anyone familiar with this program?

DS6 starts his second week tomorrow. I am impressed so far. I think for him his biggest gains will be in spelling. His decoding has come a long way already but his spelling is completely phonetic. On the fly he was able to correctly spell "spoil" and "bleach". Then they'll ask him to take a look at his mental picture and read the word if he removes the "p" in spoil or the "l" in bleach.

It is definitely stretching his weak working memory but considering he started last week with little chucks (change the "i" in "is" to an "a") and ended with longer words, it seems to be progressing.

This brings up another topic but I am going to start a new thread for that.