With a native assistance program the student is taught primarily in English, but there is someone available (either the teacher or a teaching aide) to clarify in the student's native language.

Native Assistance does not demand that a full class be formed with a specific native language, as one teacher or assistant can travel between classrooms and help students at a variety of levels. This assistant also tends to be less expensive than a resource teacher because he or she does not need to be a teacher.
In some cases, this is a service provided by the regular classroom teacher, who provides some brief explanation in the native language during a class that is otherwise taught exclusively in English.

The native assistance program allows students to be in a mainstream classroom all or almost all of the time.

One drawback is that the student does not receive any instruction in using his native language, and often is expected to learn English through a mostly immersion-style experience.