The article and the article it references say that the math portion questions are most likely out of touch with what might be expected of an elementary school teacher. For example, one person quoted says her high school graduate who took AP math couldn't answer some of the practice questions. The other indicated that it was 11th grade material - which is several years past 'elementary'.

It's buried in the second article, but it sounds like teachers have to pay to take the test and the test prep, so the company has a financial incentive not to make sure the test relates to teaching ability or success, but to make sure it's hard to pass. Why get one payment when you can get four? The school corporation in question didn't bother to check to see if it was a good test either, including having no way of tracking progress.