If you have a child who has trouble spelling, or possibly is dyslexic, this spelling series is truly miraculous. My seventh grader could not spell at all using every possible combination of "normal" public school spelling curriculums. We tried this one and the results were almost instantaneous. It takes about 15 minutes a day. Today she spelled "uncharacteristically" the first time she heard it, without having seen it written beforehand. I can't recommend it highly enough.