I’m a big fan of Barton. It’s the only program I have ever used with my dyslexic daughter. We don’t have a formal diagnosis, just the checklist from Susan Barton’s site. BUT, what a difference the Barton program has made!
The reason Susan Barton says to use only the Barton system is that the Barton system EXPLICITLY teaches phonics. All the stuff you and I do naturally, without thinking about, a dyslexic doesn’t get. So the Barton program is set up to teach every little, minute detailed step of how to read. I am learning SO much (“so that’s why we spell it this way”, etc type things).
The other reason Susan Barton says to use only her system is because she doesn’t want the student to become confused. Barton teaches in a step by step (small step!) approach, to add another philosophy will add another difficulty. I can say from experience that the Barton program is very thorough, very organized, very well thought out.
Charlotte Mason wanted children to learn to read “sightwords”. Sudan Barton includes sight words, too. So your child’s progress is not held back because of not being able to sound out the word “the”, for example.
We are not wealthy, so I buy each level of Barton as we need it, I try to get it used. And I sell back each level as I’m done with it, to help finance the next level. I wish I could keep them, but we don’t have the money for that. If your buy from Evelyn Smith, you are buying a certified used level. The customer service from Susan Barton is fabulous. I’ve had several questions and she answered within 24 hours. She has emailed me pages from previous levels because my dd needed a review (of contractions), they have been super supportive.
Do what’s right for your family, but in my mind, Barton can’t be beat and is well worth the money. We’re in Level 5, my dd is in 6th grade. I plan to start IEW SWI-A with her around January, to start writing composition.
Best wishes!😃