Teachers' implementation of and attitudes to school reforms and overriding pedagogical ideals have long been a topic of debate and research. In this article, we centre on teachers' descriptions of how progressive teaching was conducted as well as on the teachers' reasons for implementing such teaching in the 1940s. This study is based on written material consisting of 360 elementary school teachers' accounts of their teaching collected in 1946. The material was collected by a government investigation of how progressive teaching was conducted in Sweden. The accounts offer detailed descriptions of how pupils were activated and how elementary teachers at the time could use the community as a teaching resource. The article is inspired by a prosopography approach, in which the basic assumption is that it is possible to extend knowledge of social processes and societal development by studying the group profile of members of various institutions such as political or professional organisations. The analysis is based on John Dewey's and Larry Cuban's perspectives on progressivism. We found that, according to teaching the theme of pupils participation was frequently reported in 59% of the accounts, while student interaction (35%) and extended classroom (16%) were less reported. The teachers motivated their teaching on the basis of general ideals, as democracy. Also important were practical circumstances such as available teaching resources as well as physiological aspects as student's interest and development.