Jeffrey, why don’t you do the research yourself with my guidance? Get a few teachers around the US or around the world to teach kids in grades 1 to 3 who are unable to read. Ensure they do not have acuity problems. That is, they do not have sharpness or keenness of thought, vision, or hearing.
Make sure the teachers read the preface and notes before they start to teach the lessons. Teach the lessons exactly as done as per the videos. The pronunciation of the phonemes of consonants should be as enunciated by my son in the videos attached to each of the lessons.
I will bet with you that there will be no child left behind.
Now, here are the links:
Lesson 1 was uploaded on 1.10.2020.
Scroll upwards for all lessons to lesson 23.
Links to the YouTube videos are in the lessons.
A few more lessons will be uploaded in the near future.
Note: The above post is in response to Jeffrey Bowers who keeps insisting that phonics does not work. Phonics works if the pronunciation of phonemes of consonants are taught the way it is pronounced in the videos linked to my lessons.