India, May 29 -- When Class 12 results for the Central Board of Secondary Education (CBSE) were declared on May 13, the pass percentage was at its lowest in seven years. Some explained the drop as the outcome of a more transparent new evaluation system - on-screen marking of answer scripts, deployed for the first time for all 1.76 million students who appeared. Slowly, however, it emerged that the system was badly broken. Students reported blurred and truncated scans, scripts uploaded under the wrong roll numbers, and answers left unmarked; evaluators encountered copies where hands, water bottles, and pens appeared in the frame alongside answer sheets, as though photographed in a hurry. Many teachers pressed into service as online examine...