The review into child abuse was ordered in the aftermath of a trial which saw nine Asian men receive jail sentences between four and 19 years in May. The judge said they treated victims "as though they were worthless and beyond any respect".
Five girls, aged between 13 and 15, were given food, money and alcohol in return for sex - violence was used on occasions.
The victims were from "council estate", "chaotic" backgrounds and as many as 50 girls could have been victims of the gang, police said.
A chance to stop the gang was missed in 2008 and both the police and the CPS were forced to apologise for their failings.
Steve Garner was forced out of Rochdale Council over the way several cases of sexual exploitation were handled by his department.
A report released today said police and social workers "missed opportunities" to stop the sexual abuse of young girls.
Police and social workers "missed opportunities" to stop the sexual abuse of young girls in Rochdale, a report into the scandal said.