Two policy analysts will review the A-F system and make recommendations to the state about what next steps would be appropriate.
The Indiana Board of Education met Thursday to decide the fate of Marshall Community High School in Indianapolis.
The State Board of Education voted Wednesday morning to make changes to the state's letter grading system for schools.
The new system must go through public comment and could be amended before final approval.
The School Board approved the plan to file suit by a 4-3 vote.
A half dozen chronically under-performing schools did not improve enough to be removed from the state's probation list.
White's office reported that high school graduation rates have jumped, but schools have failed to meet minimum education standards over the past six years.