25th Edition
Widespread.
Taught as subject in many primary and secondary schools.
Taught in all primary and secondary schools.
Taught as subject in secondary schools.
Taught as subject in some secondary schools.
Taught as subject in primary and secondary schools from grade 5.
Taught as subject in secondary schools in grade2 7–9.
Taught as subject in some primary and secondary schools.
Taught as subject in all primary and secondary schools.
Taught as subject in some primary and secondary schools, from grade 8, but as early as grade 3 in some schools.
Found in minority schools.
Taught in all primary and secondary schools. Taught in some tertiary schools.
Taught in primary schools through grade 3.
Taught in primary and secondary schools in Swiss German [gsw] and Romansch [roh] speaking areas; taught as subject from grade 4 elsewhere.
Taught as subject in some primary and secondary schools from grade 5.
Taught as subject in a few secondary schools.
