Think this issue is really a non-issue here in the UK as it's the result of using the Balanced Literacy method.
I am new to this idea but this is what I've read about it:
Instead of teaching children to look at a word and "sound it out" from left to right, it's based on "Three-Cueing"
It teaches that print is only one of several clues to a word.
When a child doesn't know a word, they ard taught to ask 3 questions:
"What makes sense here? Look at the picture."
"What kind of word fits (grammatically) here?"
And
"What does the first letter suggest?"
Initally children are given very "predictable" texts - books with sentences like "The horse is in the barn" (picture). "The cow is in the barn". The pig is in the barn etc.
Because the books rely heavily on repetition and clear illustrations, children quickly learn the pattern and look at the pictures to "read" the changing words.
It means that children seem to be reading when actually they are making intelligent guesses.
By 8-9 illustrations disappear from the books, text gets smaller, and multi-syllabic more complex words appear because the child is now a "reader" they are expected to read words that don't really have a picture - environment or bureaucracy for example so children often don't have the skills to decode these more ordinary books.
If they muddle through for a while later on intensive "weaning" is needed or basically the secondary school children won't really be able to read.
There's a lot of work in America to help children catch up.
^this is just what I think the original poster was talking about.
The method of the thre cues is now actively banned in some states.