CC Test Developers Give Estimated Times - O'Boy!

And you thought Common Core testing might be easier to administer?  Guess again! 
PARRC (Partnership for Assessment of Readiness for College and Careers) is one of two big groups that are building tests in mathematics and English/language arts.  The other group, Smarter Balanced Assessment Consortion serves 24 states estimates 7 to 8.5 hours to take the tests.   PARRC has these time estimates...

• Grade 3: 8 hours
• Grades 4-5: 9 hours, 20 minutes
• Grades 6-8: 9 hours, 25 minutes
• Grades 9-10: 9 hours, 45 minutes
• Grades 11-12: 9 hours, 55 minutes

However there will be 9 testing sessions; performance-based tests and end-of-year assessments.  Testing window for performance based tests is 20 days and 20 days for the end of year component.
PARCC did indicate that major changes are not anticipated in the wake of research and field-testig.

Common-Core Tests to Take Up to 10 Hours.  Catherine Gewertz. 3.13..13. Education Week - Premium article.
http://www.edweek.org/ew/articles/2013/03/13/24parcc.h32.html?tkn=LLRFqfZJEcYIEO4KAH5ecL0mxVVQaoSVN4u0&cmp=ENL-CM-NEWS1

What's your take on this?  How do you think CC tests will impact instruction?