The Education Review Office says a lack of Pacific language resources is putting Pasifika preschools at risk of being unable to deliver the national early childhood curriculum.
It recommends the Ministry of Education look at producing official language resources because those made by parents and teachers may be of insufficient quality.
The report said many Pasifika preschools relied on the Tupu series of reading materials which the ministry stopped producing two years ago.
It said they have to spend a lot of time making their own resources and Government funding does not cover the full cost.
The ministry says it is considering the report.