"Interaction often takes place between the Sandawe and the other ethnic groups living among them, though conversation is normally carried out in Swahili. Some people from other ethnic backgrounds report being able to understand Sandawe, but the language is rarely spoken by non-Sandawe. ... Along the main road through the area where the Sandawe people live (Dodoma – Kwa Mtoro – Singida), most Sandawe also speak Swahili, although the level of proficiency has not been determined. Some of the older people have a very limited understanding of Swahili and do not speak it. In the more remote areas, we have even met teenagers who do not know Swahili. Children attending school, however, are required to learn Swahili and teaching is in Swahili."