Is Kindergarten Too Hard With CC Standards?

Kindergarten teachers in New York City are protesting that Common Core is way too challenging for kindergarent students.  After reading this article, I wonder if the teachers or the students are finding the curriculum too difficult.  No doubt, teachers have to rethink, retrain, and reteach.  Language used in Common Core need not be the language used when teaching students.  Using complex language of CC would definitely be difficult, but I do wonder why, with proper teaching, the children can't be learning these important skills that will be built upon in the years to come. What do you teachers of Title I students in Kindergarten think?

Playtime's over, kindergartners. Susan Edelman.  1.27.13 New York Post
http://nypost.com/2013/01/27/playtimes-over-kindergartners/