Joel Klein lambasted the Democratic candidates in the race to succeed Mayor Bloomberg for their criticism of his policies.

Klein defended the policy of giving free public space to charters, even though many of the charters have billionaires on their boards. He also defended his record of closing schools with low test scores even though many of the replacement schools exclude low-scoring students.

He didn’t mention the fact that he resigned shortly after the collapse of city test score boasts in 2010, or that he was replaced by hapless publisher Carhie Black, or that the achievement gap remained unchanged during his eight years as chancellor, or that only 22% of voters want more of the same failed policies.