LUCKNOW, March 20 -- Teachers sat on plank-like wooden benches, that too in poorly-lit classroms, at many centres across the state as the evaluation process for UP Board examinations began on Wednesday. Teachers who eventually get a backache after sitting for 6 to 8 hours a day for over a fortnight will be given a hike of Rs 3 and Rs 2 per copy, after five years, for checking Class 10 and 12 answer copies, lamented a few examiners....