I have AAS level one and two…it did not work for us. I can give you a comparison to LEE based on the reviews I’ve read and the videos I’ve watched on LEE, but just keep in mind I’ve not actually used LEE. (plan to for the next child though)
My key observation is pretty straightforwad anyway…from what I can see, ASS structures the spelling lists (at least, in the early days of the curriculum) using just one phonogram sound (even if it is a phonogram that makes several sounds), whereas LEE structures the spelling lists so that the student, even from the early days of the program, is writing a word list each day that shows a mixture of each phonogram sound.
For example, in AAS, a spelling list might be based on the short sound of “a”. The words might be cat, tan, flag, sad. In the “equivalent” (early in the curriculum) lesson in LEE, the student working on spelling using “a” would be forced to think through all three sounds of “a”. So the student might have cat, made and tall within the same lesson.
I am really rushed writing at the moment…. hope I’ve made sense. It sounds like missceegee knows both programs very well, so perhaps she can confirm what I’m trying to describe or clarify any other key differences.
HTH! Angie