Or hassles on teacher pay, you decide. The NGA has a new paper out by Emily and Bryan Hassel about pay for contribution schemes* for teachers (pdf).
Two points: First, in the venue matters department, this paper matters. Second, this debate has come a long way in a pretty short time…when Bryan Hassel published this paper in 2002 it was considered heretical.
*Paging George Lakoff!
Update: The Hassels give a longer summary of the paper and more on why it matters below in the comments. What I implied above but should have made clear is that the debate has shifted onto a “how” footing and this paper helps inform that.