The entire Swiss population is generally well educated. In Jonschwil about 74.1% of the population (between age 25-64) have completed either non-mandatory upper secondary education or additional higher education (either university or a "Fachhochschule"). Out of the total population in Jonschwil, , the highest education level completed by 617 people (19.7% of the population) was Primary, while 1,206 (38.5%) have completed Secondary, 277 (8.8%) have attended a Tertiary school, and 133 (4.2%) are not in school. The remainder did not answer this question.