DC Public Schools’ primary school food provider charged the system $7 million more than agreed upon to serve students 15 million fewer meals over five years, according to an audit of the contract and testimony of local lawmakers.

Anthony DeGuzman, chief operating officer of the school system, said Thursday he is investigating whether Chartwells-Thompson owes the schools money. The D.C. Council slammed DCPS for renewing the Chartwells contract, which has operated at a loss of more than $10 million annually and which has upset parents, who say Chartwells is serving their children unhealthy food such as Cinnamon Toast Crunch cereal.