On a quiet road in India’s capital, tucked away on a wide, red-bricked sidewalk, kids set adrift by the country’s Covid-19 lockdown are being tutored. The children, ages 4 to 14, carry book bags more than 2 kilometers (a mile) from their thatched-roof huts on the banks of the Yamuna River to this impromptu, roadside classroom. There, they receive free lessons in math, science, English and physical education, taught by a former Indian diplomat and his wife. It all began when Veena Gupta’s maid, who lives on bank of the river, complained that with schools shut, children in her impoverished community were running amok and wasting time. “If they stayed at home doing nothing, they’d become drifters,” said Dolly Sharma, who works at Veena’s high-rise apartment, which overlooks the lush riverbank.