“…Studies carried out in Estonia have, so far, analyzed the appreciation for Russian as a mother tongue (Pavelson & Jedomskihh, 1998), the fears of losing Russian profi ciency given the change of instructional language (Vihalemm, 2002); and, in general, the self-defi nitions of the Russianspeaking population (Masso & Vihalemm, 2003;Masso & Tender, 2007;Vihalemm & Masso, 2007). Th e role of the language of instruction in the development of ethnic identity has been examined only in a few studies (Soll, 2006(Soll, , 2012, which have concluded that the language of instruction does not have a direct impact on the formation of ethno-cultural identity. Until now, there have not been any studies in Estonia which analyze how the socializing environments created by instruction languages help to generate the development of ethno-cultural identity.…”