 20 (or about 3.31% of the population) belonged to no church, are agnostic or atheist, and 8 individuals (or about 1.32% of the population) did not answer the question.In Grandvillard about 189 or (31.2%) of the population have completed non-mandatory upper secondary education, and 36 or (6.0%) have completed additional higher education (either university or a "Fachhochschule").Of the 36 who completed tertiary schooling, 61.1% were Swiss men, 22.2% were Swiss women, 13.9% were non-Swiss men.