In the first year of common core math here, the district eliminated the 1-year acceleration that middle school kids could test into as a matter of routine. The district was clearly nervous about the impact on students. That acceleration went back into place (with some changes) after a year.
To be frank, the switch was indeed bumpy for both students and teachers, so they were right to be nervous. However, there's no reason to not test a child with an individual request for an acceleration. I would recommend that you request a "curriculum-based assessment" of the grade level to be skipped. It should require little more than printing out the end-of-grade assessment for the new curriculum.
