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这是最近发生的芝加哥教师罢工事件(2012年9月)，
核心是把学生的考试成绩作为教师业绩的评定标准，
http://www.nytimes.com/2012/09/12/education/chicago-is-focus-of-national-debate-on-teacher-evaluation.html?ref=education
One of the main sticking points in the negotiations here between the teachers union and Mayor Rahm Emanuel is a new teacher evaluation system that gives significant and increasing weight to student performance on standardized tests. Personnel decisions would be based on those evaluations.
Over the last few years, a majority of states have adopted similar systems, spurred by the desire to qualify for the Obama administration’s Race to the Top education grants. The Education Commission of the States says that 30 states require that evaluations include evidence of student achievement on tests, and at least 13, and the District of Columbia, use achievement measured by test scores for half or more of a teacher’s rating.
Proponents say these measures are needed to improve teaching in a country where 33 percent of fourth graders are not reading at grade level and about one-quarter of public high school students do not graduate on time, if at all. They say the new rating systems will help districts identify the best and worst teachers.
But other studies have shown that students taught by teachers who achieve high value-added scores go on to have lower teenage pregnancy rates, are more likely to go to college and earn higher incomes as adults.
Some studies, including one that looked at a pilot of teacher evaluations here, have shown correlations between teachers whose students’ test scores improve and those who receive high marks in classroom observations and on student surveys.
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In Search of Excellent Teaching, http://www.nytimes.com/2012/09/17/opinion/in-search-of-excellent-teaching.html
The more rigorous evaluation systems that have taken root in several states and districts around the country are intended to change that picture. These systems, which take student achievement into account in various ways, are still in their formative years, but they have already opened the door to a different way of doing business. At their best, these evaluation systems are based on the idea that teaching is difficult to master and that high-performers tend to get that way through intensive feedback and help from colleagues.
The school system in Montgomery County, Md., established its evaluation and mentoring system more than a decade ago. The system does not specify exactly how much weight student test scores and other data should receive. But depending on the circumstances, the evaluation may include scores from state tests, student projects, student and parent surveys and other data.
The widely praised evaluation system in New Haven also relies on a complex mix of factors. It takes into account year-by-year improvement in student learning, as measured by progress on state and local tests and attainment of academic goals. The system also examines the teachers’ instructional abilities, judged by frequent observations by principals and other managers. Teachers receive regular face-to-face feedback so that they are fully aware of what they need to do to improve. - 转发：藤校毕业真的不是让人骄傲一生的成就