Company officials have blamed a hardware failure at a data center for the glitch that stalled Oklahoma school's standardized testing this week.

CTB/McGraw-Hill president Ellen Haley apologized to the Oklahoma Board of Education on Thursday for the malfunction that disrupted test for more than 8,200 students Monday.

According to the Tulsa World (http://bit.ly/1mGVVLO ), the testing vendor's technicians identified the problem and fixed it by 11 a.m. Monday.

Last year, server issues with the same company shut down testing statewide for two days.

Oklahoma State Superintendent Janet Barresi has recommended that Oklahoma not renew its contract with CTB/McGraw-Hill for 2014-2015.


Information from: Tulsa World, http://www.tulsaworld.com