Orange County is one of 14 Florida school districts that must investigate suspicious test scores on FCAT and algebra end-of-course exams.
The other school districts are: Broward, Miami Dade, Duval, Flagler, Gadsden, Hillsborough, Jefferson, Lee, Leon, Manatee, Palm Beach, Polk and Seminole.
These school districts all had tests that had high numbers of erased answers.
The districts are asked by the Department of Education to investigate the matter.
A report by a test security firm hired by the state Department of Education found nearly 7,000 suspicious tests out of a total of 4 million FCAT and algebra exams.