The students of the Government Middle School in Nutan Vihar colony were served a vegetable curry made of potato and rotis in the afternoon and after eating them they complained of uneasiness, vomiting and loose motion, Cluster Principal C L Ahirwar said.
Teachers stopped other students from eating and took the sick students to the district hospital. Nine were discharged after primary treatment while the rest were admitted.
Their condition is reported to be stable, he said.
Ahirwar said he had complained against the agency supplying mid-day meals a number of times, but no action was taken by the concerned officials.