Mike Miles, the controversial superintendent of the Dallas public schools, resigned. He was a military man, trained by the unaccredited Broad Superintendents Academy.

When he arrived in Dallas, he announced ambitious goals, including significant gains in test scores. He fired many principals, closed schools, demoralized teachers (who left in droves), pushed school choice, instituted pay-for-performane, appointed large numbers of young TFA to high-level administrative positions (including the director of human tesources, hired at age 28, fired at age 30 for improprieties), evaluated teachers by test scores: the whole reform play book, but achieved none of his goals. After three years, test scores (the golden ring of reformers) were flat or declining.

Teacher turnover and flight from DISD reached unprecedented numbers. The atmosphere became so toxic that Miles moved his family back to Colorado, presumably for their safety.

One of the lowest points in his three-year tenure was when he directed police officers to remove a school board member from a high school in her district, where she was visiting.

His supporters were disappointed and called it “a sad day.”

An anti-Miles blogger insisted that Miles should stay and live with the chaos and destruction he caused.

Others, no doubt, will be glad to see him go.