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The DOE would have us believe that the high school progress reports it released last week are a neutral evaluation tool where any school can do well irrespective of student demographics and characteristics. As proof it would point to its peer index metric which sorts schools into peer groups based on student characteristics and their eighth grade standardized test scores - the concept being that schools are compared to schools with similar students. Unfortunately the system doesn't work the way it was intended.

This week Eric Hanushek and Diane Ravitch are discussing whether removing the lowest-performing teachers is a good idea.  Hanushek started the debate on Monday and Ravitch responded yesterday. Here's Hanushek's response below.   Ravitch will finish the conversation with a post tomorrow.

Students, teachers and advocates say they are watching once-respectable schools corrode before their eyes as the facilities are swamped with more high-needs students, and teachers have fewer incentives to stay.

The city wants to give one third of a formerly-struggling Cobble Hill high school to a high-performing charter school - but parents are already fighting the co-location plan. Under the plan, the Baltic and Court street school - which is home to Brooklyn School for Global Studies and the School for International Studies - would house grades kindergarten through fourth of Success Charter Network's school, run by former City Councilwoman Eva Moskowitz.

Yesterday in a post below Eric Hanushek argued in favor of removing the lowest-performing teachers. Today, Diane Ravitch responds below.  Hanushek will respond tomorrow and Ravitch again on Thursday.

Our main research question is the following: How well do commonly used estimators perform in estimating teacher effects under a variety of known conditions, including those in which particular underlying assumptions are violated?

"There is a serious flaw in the national Common Core English/Language Arts reading standards and it is the result of the ideological point of view about literacy and learning of those who developed it. I am not sure if it was done intentionally or if they are actually unaware of it. The flaw is uncertainty about how we know what a document really means."

"This is the executive summary of the statement of the American Statistical Association on the use of value-added assessment to evaluate teachers. Please share it with other teachers, with principals, and school board members. Please share it with your legislators and other elected officials. Send it to your local news outlets. The words are clear: Teachers account for between 1 and 14% of the variation in test scores. And this is very important to remember: "Ranking teachers by their VAM scores can have unintended consequences that reduce quality.""

"If you're a public school teacher in Kentucky, the state has a message for you: You have no right to know the details of the investments being made with your retirement savings. That was the crux of the declaration issued by state officials to a high school history teacher when he asked to see the terms of the agreements between the Kentucky Teachers' Retirement System and the Wall Street firms that are managing the system's money on behalf of him, his colleagues and thousands of retirees."

"Earlier this year, a paper by Roderick I. Swaab and colleagues received considerable media attention (e.g., see here, here, and here). The research questioned the widely shared belief that bringing together the most talented individuals always produces the best result. The authors looked at various types of sports (e.g., player characteristics and behavior, team performance etc.), and were able to demonstrate that there is such thing as "too much talent," and that having too many superstars can hurt overall team performance, at least when the sport requires cooperation among team members."

"New York's charter school advocates have poured millions of dollars into electing a State Senate hospitable to their agenda items for the upcoming legislative session. Now, those leaders are beginning to craft their legislative priorities, which will include eliminating the state's cap on charter schools, increasing funding for established charters, and establishing more accountability measures for district schools and teachers."

"In the charter-school sector, this arrangement is known as a "sweeps" contract because nearly all of a school's public dollars 2013 anywhere from 95 to 100 percent 2013 is "swept" into a charter-management company. The contracts are an example of how the charter schools sometimes cede control of public dollars to private companies that have no legal obligation to act in the best interests of the schools or taxpayers."

"Science isn't important only to scientists or those who profess an interest in it. Whether you find fascinating every new discovery reported or you stopped taking science in school as soon as you could, a base level understanding is crucial for modern citizens to ground their engagement in the national conversation about science-related issues."

"Everyone agrees that American schools need help. But as Diane Ravitch argues, the fixes proposed by billionaire savior Bill Gates will only makes things worse."

"Dallas business interests stacked the school board. Now, a rule change could open the door for wholesale school privatization."

"The media loves the story of miracle schools. Imagine that! A school where 90% or more pass the state tests! Where 100% graduate. Where 100% are accepted into four-year colleges. Michael Klonsky once said to me, miracles happen only in the Bible. When the subject is schools, miracle claims should be carefully investigated."

"Eva Moskowitz, the firebrand chief of the city's fastest growing charter chain, isn't just backed by Wall Street, she's officially moved there - with Wall Street-type salaries to boot."

"Gordon Lafer, a political economist and University of Oregon professor who has advised Congress, state legislatures, and the New York City mayor's office, landed at the airport in Milwaukee, Wisconsin, late last night bringing with him a briefing paper on school privatization and how it hurts poor kids."

"Charter schools in Pennsylvania are defined by their flexibility and freedom from many state regulations. A new study shows they're also marked by their lack of diversity."