I am, but I can't speak for all of us. There are reviews already in place here in my state and every 5 years when our license is due we have to walk through those processes. We have district evaluators in our classrooms several times per school year as well as administrators. It is a fairly painstaking process that would be made infinitely better if at the end we had the opportunity of a pay increase at the end of the tunnel. As it stands, it's a process to grade how well we do with no incentives at all. When I worked at Pizza Hut in college we had a bi-annual evaluation period with a raise opportunity of 5-10 cents per hour. It wasn't much, but every little bit helps. I wouldn't be looking for a 50% salary increase or anything crazy, but the prospect of a better life for me and my family would be a great motivator.
One thing I KNOW should not be included is test scores. I know that's the easiest thing from the outside to use to measure success, but there are far too many issues outside of the classroom that play a much more important role in those measurements. I've taught in affluent schools where 75-80% of the students are expected to go to college from their parents and I currently teach in a school where the same number of parents barely graduated high school. The expectation to do well just isn't here, and test scores reflect that. Sure, the cream always rises to the top, but there's not enough of that here to make a difference on the standardized tests. To punish good, hard working teachers who just don't have the work ethic and support from home isn't fair. Come watch me work, critique me, and give me advice all you want. I'm willing to do what it takes and jump through all the hoops you throw my way for a better life.