The Basic Trade Unionism Postal Course data consists of two files: Completions The aim of the completions survey was to learn whether the design elements of the revised version of the course `Basic Trade Unionism' had been effective in terms of enhancing students' understanding of the principles of trade union organisation explored by the course. Drop-outs The aim of the drop-outs survey was to provide profile information on those who dropped out, why they began a course, how they adapted to study, how useful they found it in their trade union activities, and why they decided not to continue.