American Federation of Teachers President Randi Weingarten’s commitment to factual accuracy is tenuous. Weingarten, who is one of the most outspoken union leaders in the country, has proven that she’s willing to say one thing and do something entirely different.

Consider the following:

Poverty?

Weingarten:  When it comes to explaining America’s stagnant tests score “The big difference is poverty… In the United States of America, if you actually factored out poverty and looked at the schools with less than 20% poverty, we outflank everybody.”

Fact Check: That’s right. If you look at the schools with the high-performing students, we have the smartest kids around. Pretending that poverty is unique to America is an easy dodge.

There’s little evidence that poverty rates are the cause of the U.S.’s poor performance. In its analysis of the PISA results, the OECD finds that “The share of students from disadvantaged backgrounds in the United States is about average.”

But let’s assume for the moment that Weingarten has a point, and low-income students’ bad performance drags the whole average down. That would actually make the AFT look even worse, because they represent bad teachers in inner-city school districts. Public schoolteachers in Chicago, New York City, Washington, D.C., Detroit, Baltimore, Philadelphia, and Los Angeles are among the districts organized by AFT. If those kids aren’t learning, the AFT has to bear some responsibility for failing to teach them.

Tough on Incompetent Teachers?

Weingarten: “If somebody shouldn’t teach—if somebody can’t teach—they shouldn’t be there.”

Fact Check: There are two ways of interpreting this.

If we take Weingarten at her word, then she’s just made an groundbreaking commitment to end her decades-long effort to protect incompetent teachers by creating byzantine processes to terminate poor-performing teachers under the guise of “due process” (a.k.a “tenure”).

If, on the other hand, we judge her by her actions, its clear she’s saying one thing, and doing something entirely different.

Weingarten’s union has fought tooth and nail to preserve teacher tenure systems that make it nearly impossible to fire teachers who “shouldn’t teach.”

Over a three-year period spanning a portion of Weingarten’s reign as head of the AFT local in New York, The New York Daily News reports that “just 88 out of some 80,000 city schoolteachers have lost their jobs for poor performance.”

Most recently, the New York state Department of Education imposed a system on the city that gave “ineffective teachers” two years to improve before they could be fired. The AFT did not approve the policy.

Still not convinced? Just take a moment to read about the 8 year long, $1 million odyssey New York schools took to finally terminate Yvonne Chalom after she was convicted of 32 counts of aggravated harassment in 2005.

Actions speak louder than words.

Standardized Tests?

Weingarten: The top ranked countries don’t rely on standardized testing to judge educational effectiveness.

Fact Check: We went to the source, Volume 4 of the OECD’s 2012 PISA Results. It turns out that schools in the top ranked countries are either on par with the U.S. or more likely to use tests to monitor teachers’ performance.

Percentage of students in schools whose principal reported that tests or assessments of students achievement have been used to monitor the practice of mathematics teachers at their schools (page 158)

While we were looking at test score use, we came across an even more shocking statistic.

Percentage of students in schools whose principal reported that appraisals of and/or feedback to teachers lead directly to change in salary.

You read that right. Students in China, which is not exactly well-known for employing free market principles in the public sector, are almost four times more likely to have a teacher who has received merit-based pay.