NEWARK, N.J. — New Jersey’s largest school district has sued the country’s leading maker of artificial turf after a report that executives knew fields might not live up to lofty marketing claims.

The lawsuit filed Wednesday by Newark public schools comes after a review of internal emails and interviews by NJ.com found that Montreal-based FieldTurf sold more than 1,000 fields to towns, schools and teams across the U.S. after its executives knew they were falling apart faster than expected.

The company says that it disagrees with the conclusions reached by NJ.com and that the facts will show that New Jersey customers were well-served by the company.

The company says it has lived up to its warranties and hasn’t hurt taxpayers.

The lawsuit is seeking class-action status for other districts that bought FieldTurf.