Over a decade ago my aunt taught 4th grade. She told me that a lot of kids were getting there who couldn't read and it was impossible to teach them 4th grade ma

Over a decade ago my aunt taught 4th grade. She told me that a lot of kids were getting there who couldn't read and it was impossible to teach them 4th grade material. This seems like that on greater scale. More granular mastery-based progression seems like it would be a good start.