We were trying to decide about Barton when a wonderful woman posted her experiences with sequential spelling (about $12 per book). If you take the time and do it exactly as it says, it works. My daughter has improved not only her spelling, but her reading! Another friend of ours spends quite a bit of time doing Barton. I spend 10 minutes a day. Our children are both progressing, but mine is progressing faster, and with less time and money on my part. I think it's worth a shot!