Romansh language of Grisons, and is a working language in various districts and numerous municipalities within the canton. The first Swiss constitution of 1848, as well as the subsequent revision of 1872, make no mention of Romansh, which at the time was not a working language of the Canton of Grisons either. The federal government did finance a translation of the constitution into the two Romansh varieties Sursilvan and Vallader in 1872, noting however that these did not carry the force of law. Romansh became a national language of Switzerland in 1938, following a referendum. However, a distinction was introduced between "national
Romansh language speakers, but the regional varieties could continue to be used when addressing a single region or municipality. In schools, Rumantsch Grischun was not to replace the regional dialects but only be taught passively. The compromise was largely accepted by both sides. A further recommendation in 1999, known as the "Haltinger concept", also proposed that the regional varieties should remain the basis of the Romansh schools, with Rumantsch Grischun being introduced in middle school and secondary school. The government of Grisons then took steps to strengthen the role of Rumantsch Grischun as an official language. Since the cantonal constitution explicitly named