The Oklahoma Attorney General's Office has launched an investigation into disruptions with the state's computerized testing system for public school students.
For the second year, state mandated testing was halted due to disruptions in the testing system provided by CTB/McGraw-Hill.
Attorney General Scott Pruitt sent a letter Monday to school superintendents asking for each district to report in detail the problems they faced during testing.
"In light of the impact on Oklahoma's schoolchildren and the State, it is important to seek accountability for any and all testing failures," Pruitt wrote.
"To this end, my office is conducting an inquiry into the cause and effect as well as potential damages resulting from the disruption. Again, this effort fundamentally is about ensuring accountability to the State, each school district and ultimately to the parents and children themselves."
The State Board of Education voted last month to end the contract with McGraw-Hill.
The state received $1 million back from the company for the problems with testing last year.