(Chicago Tribune) — When Rochester City Schools Superintendent Jean-Claude Brizard departs to take charge of Chicago’s public school system, he’ll leave behind a largely broken school district with dismal test scores, shaky finances and a fractured relationship with teachers. Though Brizard touts improvements in graduation rates and test scores among his accomplishments in his 3 1/2 years, opinion is sharply divided on whether he has made a significant difference in the performance of the district’s largely low-income black and Latino students. Thirty of the city’s schools, about half, failed federal academic standards, based on last year’s testing, according to the New York education agency. Twelve high schools and junior-senior highs are so troubled that they made the government’s list of worst-of-the-worst schools, state records show. The district also faces deficits and dwindling reserves, as well as an impasse with teachers in contract negotiations.