By 4 pm—two hours short of the designated time—the children, mostly between nine and 14 years, would clamour to be let off. It was a tough call for the teachers of this non-formal education centre in Calcutta’s Tiljala area. If school was off early, the kids would be made to go to work by their parents. In this poor, crime-infested neighbourhood, with its dirty labyrinthine lanes and the stench of cured leather thick in the air, about 80 per cent of the youngsters are child workers. With tannery jobs being the main source of income, children do several things—from cleaning and beating leather sheets to running ‘chaat’ shops in the tucked-away liquor dens—to prop up their large families. "When we started the school, the idea was to keep the children here for as long as possible so that they wouldn’t be forced to work," says Rajesh Kumar Nonia, a volunteer teacher. The discomfort wasn’t helping.