 133 (or about 5.01% of the population) belonged to no church, are agnostic or atheist, and 139 individuals (or about 5.23% of the population) did not answer the question.In Chalais about 923 or (34.7%) of the population have completed non-mandatory upper secondary education, and 254 or (9.6%) have completed additional higher education (either university or a "Fachhochschule").Of the 254 who completed tertiary schooling, 61.8% were Swiss men, 28.3% were Swiss women, 5.5% were non-Swiss men and 4.3% were non-Swiss women.