The Myth of Learn to Read / Read to Learn

The Myth of Learn to Read/Read to Learn:
"The fundamental premise of the myth is as follows: "Learning to Read" happens in the early grades (K–3) and consists primarily of decoding and memorizing basic sight words. "Reading to Learn" begins in fourth grade and consists mostly of reading for information."

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The same premise is used in the whole system of education,
where "learning" and "work" are separated by a sharp line.
In the first part young people "accumulate knowledge" (and dept :)
and after this they are "using that knowledge" and producing.

As Google HR data study has shown, this does not quite work...