An NDTV reality check in South Delhi’s Kalu Sarai and Neb Sarai – two of the capital’s largest coaching centre clusters – suggests that many of the same safety concerns continue to exist despite repeated warnings, inquiries and promises of reform. An NDTV reality check in South Delhi’s Kalu Sarai and Neb Sarai – two of the capital’s largest coaching centre clusters – suggests that many of the same safety concerns continue to exist despite repeated warnings, inquiries and promises of reform.