LANSING -- State education officials are scheduled to release an annual list of Michigan's persistently lowest-achieving schools.

The list will be released by theDepartment of Education Friday.

It will be the second time Michigan officials have released an annual list that notes the poorest-performing academic schools in the state. The rankings are based on a federally-prescribed and federally-approved formula.

Schools on the list will have 90 days to submit a detailed school improvement or redesign plan.

Michigan officials also will release a "top-to-bottom" ranking of all public schools based on proficiency, student achievement, improvement, graduation rates and other factors.