Romansh language published in 1703, though either the Catholic variety of Sursilvan or Putèr was more commonly used there until the 20th century. In the 16th century, the language border between Romansh and German largely stabilized, and it remained almost unchanged until the late 19th century. During this period, only isolated areas became German-speaking, mainly a few villages around Thusis and the village of Samnaun. In the case of Samnaun, the inhabitants adopted the Bavarian dialect of neighboring Tyrol, making Samnaun the only municipality of Switzerland where a Bavarian dialect is spoken. The Vinschgau in South Tyrol was still Romansh-speaking in the
Romansh language the Romansh area into two geographically non-connected parts. In the 1920s and 1930s the rest of the villages in the valley became mainly German-speaking, sealing the split. In order to halt the decline of Romansh, the Lia Rumantscha began establishing Romansh day care schools, called "Scoletas", beginning in the 1940s with the aim of reintroducing Romansh to children. Although the "Scoletas" had some success – of the ten villages where Scoletas were established, the children began speaking Romansh amongst themselves in four, with the children in four others acquiring at least some knowledge of Romansh – the program ultimately failed