Literacy instruction may become limited to a few texts and drill-and-kill teaching.
There are two issues embedded in this concern: (1) drill/didactic literacy teaching and (2) too few texts.
With respect to the concern about drill-and-kill teaching, we believe: That teachers should teach literacy in kindergarten.
The CCSS propose a list of specific English/Language Arts concepts and skills that kindergartners should learn (and therefore teachers should teach).
Please visit National Institute for Early Education Research (NIEER) for the complete blog post.