What??!!! Principals at Failing Schools Eligible for Bonuses

According to the NY Times, the principals at four failing New York City schools are eligible for bonuses. How could that be you ask:

Education Department officials said the incongruity resulted from two different measuring systems.

The school report cards judge schools on factors that are not considered in allotting the bonuses. The report cards, for instance, judge high schools on how students perform on five Regents exams, while the bonuses look only at English and math Regents scores. The report cards also consider how many credits high school students accumulate each year, while the bonus system does not.

Alright, I see the discrepancy and differences in measurements, but is it not too hard to eliminate principals at schools that are failing from the list? I mean really.

This is just another episode of how one hand does not know what the other hand is doing in education.