Latvian language
Upper Latvian dialect is spoken in Eastern Latvia. It is set apart from rest of the Latvian by number of phonetic differences. The dialect has two main varieties – Selonian and Non-Selonian. There is a standard language, the Latgalian language, which is based on deep Non-Selonian varieties spoken in south of Latgale. The term "Latgalian" is sometimes also applied to all Non-Selonian varieties or even the whole dialect. However, it is unclear if it is accurate to use the term for any varieties besides the standard language. While the term may refer to varieties spoken in Latgale or by Latgalians, not all speakers identify as speaking Latgalian, for example, speakers of deep Non-Selonian varieties in Vidzeme explicitly deny speaking Latgalian.
Russian language in Latvia
In 2017 a total of 7% or 5,332 students studied in Russian in Latvia's state and private higher education institutions (around one third in private colleges and less than 1 percent in state higher institutions), the most being at the Transport and Telecommunication Institute, where the share of the students with Russian as the language of tuition reached 86% or 2,358. Other private higher education institutions with notable percentage of people studying in Russian included Information Systems Management Institute with 53% students, Riga International School of Economics and Business Administration with 34% students, Riga Aeronautical Institute with 18% students, Baltic International Academy with 17% students, and University of Economics and Culture with 6% of all its students studying in Russian.