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 that the Ministry of Education look at producing official language resources because those made by parents and teachers may be of insufficient quality.
The report says many Pasifika preschools relied on the Tupu series of reading materials which the ministry stopped producing in 2011.
It says they have to spend a lot of time making their own resources and government funding does not cover the full cost.
Jan Taouma, manager of the A'oga Fa'a Samoa in central Auckland, is happy the ERO is highlighting the problem, saying Pacific language preschools should have the same quality of teaching resources as everyone else.
The ministry says it is considering the report.