Chief Minister Manohar Parrikar should suspend the scheme within a week, Nationalist Congress party (NCP) spokesperson Trajano D'Mello said.
"If government fails to suspend it, we will seek the Governor's intervention as the constitutional authority to stop the scheme," he said.
As many as 22 students of St Joseph High School at Usgao, 40 km from here, were taken ill yesterday after eating the meal served at the school.
D'Mello said the scheme should not be resumed until hygienic kitchens were made available at schools and the students can be given glucose biscuits in the meantime.
He also claimed that barely half the students actually eat the food served at the school, and parents were increasingly asking the children to stay away from it.
Goa government has begun an inquiry into the Usgao incident.
