The legal basis is short and old. Article 16 of the cantonal constitution says that communal citizenship founds cantonal citizenship and that the law sets the conditions and the procedure. The Loi sur le droit de cité of 9 November 1978, still enacted by the Assemblée constituante, requires foreign nationals in article 6 to exercise their civil rights, to enjoy a good reputation, to have the means to support themselves and their family and to prove their family and nationality status; the Gouvernement grants them communal and cantonal citizenship together, on the strength of the commune's promise. The decree of 6 December 1978 regulates the procedure. Neither text mentions a test; since 1 January 2018 the integration check has followed federal law, which the canton announced in its 2017 press release as stricter: C permit, ten years of residence, successful integration and, for the first time, written language skills.
How Jura checks familiarity with Swiss living conditions is on the Service de la population's page: during the naturalisation procedure you take part in an interview in which you answer a questionnaire about your knowledge of Switzerland and Jura. The questionnaire covers four themes, geography, history, civics and general knowledge. The canton publishes neither the number of questions nor the duration nor a pass mark, and it puts no question catalogue online; as reading it links to «La Confédération en bref» and its own page on Jura history. The interview takes place before the communal decision: in the conseil général of Haute-Sorne on 22 April 2024 the mayor said of each of the three applications that after the hearing by the SPOP everything was in place to grant communal and cantonal citizenship, and the council approved by acclamation.
For preparation the SPOP has commissioned AvenirFormation with course S25 «Préparation à la naturalisation». Its aim is to know the political institutions of Switzerland and Jura, state and constitution, democracy and political rights, federalism and parties, how politics works with three powers and three levels, votes and elections, history, geography and the economy, and the main elements of Jura and Swiss culture. The course has three blocks, geography, history and landmark events; democracy, federalism, citizenship; social insurance, the health system, work and education, runs for 18 lessons over six weeks, Monday or Wednesday from 6.30 to 9 pm at the École professionnelle in Delémont, costs CHF 250 including materials and closes each theme with a self-test; the prerequisites are French A2 written and B1 spoken and the formal naturalisation requirements. Dates are on the registration form and on avenirformation.ch. The canton uses the same place for the language: AvenirFormation is an accredited fide centre for the language evaluation with which you prove B1 spoken and A2 written if you are not exempt.
Our 49 questions on the canton of Jura cover the Jura part of the four themes as the constitution, the canton's key dates and the statistics give it: the prince-bishops of Basel with Porrentruy as their residence, the Congress of Vienna of 1815 and the allocation to Bern, the plebiscite of 23 June 1974 with 36,802 yes against 34,057 no, the 1975 sub-plebiscites by which Courtelary, La Neuveville, Moutier and the Laufental stayed with the canton of Bern, the constitution of 20 March 1977, recognition by the people and the cantons on 24 September 1978 and sovereignty on 1 January 1979, Vellerat in 1996, the Bernese Jura's no of 2013 and Moutier's transfer on 1 January 2026. Then the institutions: the Parlement with sixty members (art. 85), the Gouvernement with five members (art. 93), Delémont as seat of parliament and government and Porrentruy as seat of the courts (art. 69), the four districts of Delémont, Franches-Montagnes, Porrentruy and Moutier (art. 109), the optional referendum with 2,000 voters or five communes (art. 78), 51 communes and 858 km² since Moutier's transfer according to the canton's portrait page (839 km² and 50 communes at 1 January 2025 in the Mémento 2025) and 75,178 residents at the end of 2025. For the federal part take the lessons on Swiss politics, history and geography.