A district spokeswoman said the delay was not related to whether the district had enough money to cover payroll.
The new Backpack Index from Huntington Bank shows how a rise in estimated costs for school supplies could hurt low income families.
Carmen Fariña reflected on her first full-year leading the nation's largest public school system.
Robert "Bud" Spillane led two of the nation's largest school district, and is credited with rescuing one from the brink of disaster and pushing another to new heights.
The 21 districts, represented by former Mississippi Gov. Ronnie Musgrove, had argued that the state funding formula had deprived them of $240 million over the last six years. They plan to appeal.
Pastorek's appointment as co-executive director signals the Eli and Edythe Broad Foundation's growing emphasis on pushing for state-run districts to improve the lowest-performing schools.
Citing health concerns and a need for fresh leadership, Achievement School District Superintendent Chris Barbic says he's "leaving confident that Tennessee's schools are better off today than when we began."
The new leadership team comes to a district facing a host of financial challenges, including a $1.1 billion budget deficit in the upcoming school year.
Reports say that Forrest Claypool, Mayor Rahm Emanuel's chief-of-staff and former head of the city's transit authority, will be appointed as CEO of the nation's third-largest school system.
A report by Save the Children finds that most of the recommendations made after Hurricane Katrina to protect children in disasters have not been followed.