Reformed Church. Of the rest of the population, there were 4 individuals (or about 0.94% of the population) who belonged to the Christian Catholic Church, and there were 22 individuals (or about 5.15% of the population) who belonged to another Christian church. There were 3 (or about 0.70% of the population) who were Islamic. There were 1 individual who belonged to another church. 40 (or about 9.37% of the population) belonged to no church, are agnostic or atheist, and 19 individuals (or about 4.45% of the population) did not answer the question. Education In Oulens-sous-Échallens about 164 or (38.4%) of the population have completed non-mandatory upper secondary education, and 63 or (14.8%) have completed additional higher education (either university or a Fachhochschule). Of the 63 who completed tertiary schooling, 58.7% were Swiss men, 23.8% were Swiss women, 11.1% were non-Swiss men. In the 2009/2010 school year there were a total of 62 students in the Oulens-sous-Échallens school district. In the Vaud cantonal school system, two years of non-obligatory pre-school are provided by the political districts. During the school year, the political district provided pre-school care for a total of 296 children of which 96 children (32.4%) received subsidized pre-school care. The canton's primary school program requires students to attend for four years. There were 34 students in the municipal primary school program. The obligatory lower secondary school program lasts for six years and there were 28 students in those schools. , there were 39 students in Oulens-sous-Échallens who came from another municipality, while 44 residents attended schools outside the municipality. References Municipalities of the canton of Vaud