John O'Connor and Trevor Aaronson: Many Florida school districts have no way to know whether K12 students are actually being taught by properly certified teachers.
Trevor Aaronson: Brevard Public Schools has launched a review of K12 teacher records following allegations that the for-profit online educator uses improperly certified teachers.
Trevor Aaronson: K12 did not believe the Florida Department of Education's probe was "material" to investors.
The documents include internal K12 emails in which a company manager asked certified teachers to sign for having taught students they never encountered.
Trevor Aaronson and John O'Connor: The Florida Department of Education has launched an investigation of K12, the nation’s largest online educator, over allegations the company uses uncertified teachers and has asked employees to help cover up the practice.
The U.S. Postal Service refuses to investigate a suspicious package from Yemen that spilled chemicals at an Orlando facility and caused an employee's debilitating illness.