Pedagogical features and implementation of a UNIX-based management system (UNIEM) designed to support the instructor in teaching English as a second language using a network of workstations are described. The application discussed here is for teaching English composition to students at the University of Aizu (Japan). UNIEM is constructed to assist the computer novice in these tasks: sending out assignments using electronic mail (e-mail) on pre-set dates; reminders of missing homework when necessary; sorting of homework submitted using e-mail; enforcing submission deadlines and required homework length; partial evaluation of homework, particularly regarding mechanical mistakes such as spelling; distribution of evaluation results to students; reformatting of student writing for correction purposes; use of global or specialized vocabulary; identification and collection of authentic, interesting, or critical examples of grammar patterns for presentation in class; generation of statistical information; and graphic display of data. Implementation of these tools and potential for customization, possibly in connection with a specific research objective, are discussed. A program decomposition principle is also presented. (MSE)