The senator Galeai Tuufuli says he has advised the department to seek a law change if the Samoan language is to be used in school instruction.
At the moment English is the formal language of instruction and Samoan can be used for clarification.
There have been claims in parliament some classes are being taught in Samoan.
The government established two committees earlier this year in a bid to establish dual language teaching in American Samoan schools.
