The article summarizes the results of sociolinguistic study of the language environment of secondary schools in Ukraine, on the basis of which the conclusion about its bilingualism was made. It is proved that the quality of the language environment does not correspond to the declared school status. Changes in the assessment of the language environment of schools from 2006 to 2017 are identified and it is concluded that it is possible to develop recommendations for improving the legal support of the use of languages in the Ukrainian education.

The article deals with the problems of prevention in the preservation and development of idioms in the multilingual territory between the Dniester and the Danube rivers, based on the sociolinguistic situation of the region, the language and educational policy in the area and their dynamics, and a search for a solution. The goal involves modeling forecasts (possible development vectors) of the ethnolinguistic situation within the investigated area, in order to be able to avoid negative scenarios, but to move along the path of its harmonious development, to find tools and measures for its constructive management. It is considered that the problems preventing the preservation of this continuum’s linguistic diversity, as well as the development of idioms in a multilingual environment, are caused by both internal (problems of effective implementation of the language and educational policy of Ukraine) and external factors. In order to ensure the preservation and development of the area’s idioms, some negative, unfavorable scenarios in the development of the ethnolinguistic and political situation were modeled. In our opinion, a number of measures should be taken to prevent the ethno‑linguistic situation from developing along such destructive vectors. First of all, it is necessary to form, in some ways reanimate, a positive image of the Ukrainian Language, at least – it should not be perceived by minorities as an imposed language. If the Ukrainian authorities do not have an understanding of this necessity, the European Union could influence the resolution of many partial issues with the linguistic life of the region.